It’s been a while, but I finally got a new chapter out! I hope you all enjoy!
Chapter Summary: Wolffe tries to build his lightsaber, “tries” being the operative word. Rex tries to figure out how to deal with Anakin after their startling conversation a few days prior.
Work Summary: The 501st suffered a devastating blow on Umbara with the loss of Captain Rex at the hands of Pong Krell.
Rex doesn’t understand why he’s still around after having died, but he realizes that he might be able to use this to the advantage of all of his brothers.
Or: Rex is a ghost, and he’s just as confused about it as everyone else is.
Chapters: 1/1 Fandom: Star Wars: The Clone Wars (2008) - All Media Types, Star Wars - All Media Types Rating: Teen And Up Audiences Warnings: No Archive Warnings Apply Relationships: CC-2224 | Cody & CT-7567 | Rex Characters: CC-2224 | Cody, CT-7567 | Rex, Obi-Wan Kenobi Additional Tags: Angst, Hurt/Comfort, Post-Episode: s04e13 Escape From Kadavo, Implied/Referenced Torture, Whipping, Caretaking, Platonic Cuddling, Protective CC-2224 | Cody, CC-2224 | Cody Has Issues, CC-2224 | Cody Needs a Hug, CT-7567 | Rex Needs a Hug, CT-7567 | Rex Whump, Hurt CT-7567 | Rex, CC-2224 | Cody has PTSD, Clone Trooper Mistreatment (Star Wars), Implied/Referenced Child Abuse, Slavery, Exhaustion, Aftermath of Torture Summary:
Cody and Rex after Kadavo.
So this one day Rex comes back to Coruscant and he just doesn’t seem to be acting right. No one can quite put their finger on it…but something is just…off.
The next day Cody returns, and it’s the same thing. Something is just…off.
When asked if something’s wrong they both just kind of shrug it off. ‘I’m fine.’
They don’t talk as much. Their habits have changed just a little. No one can figure out what’s happened and it’s driving everyone crazy.
Then Ahsoka goes to talk to Rex and stops mid-sentence.
“…”
“Problem, Commander?”
And she rubs her hand across his head and the blonde comes out and it’s BLACK and ‘Rex’ starts cracking up and ‘Cody’ is almost crying because he’s laughing so hard and everyone realizes they switched armor and Wolffe almost shoots them both because THat wAS SO unNECESSARY.
Hmm how about speechless and Rex??
Speechless: Rex can't speak because of a sore throat.
“You’re definitely sick,” Kix remarked.
Rex glared at Kix. Really? He was sick? He had no idea, other than his crusty eyes and sniffly nose and the open sores at the back of his throat that felt like tiny daggers when he swallowed, nevermind spoke.
“I’d like to keep you in the medbay, for the next day or two. At least until you can speak again.” Rex crossed his arms and raised an eyebrow. He knew Kix; he would never phrase it optionally unless it was optional. So Rex would be breaking no regulations by walking out of the medby right now.
Which he fully intended on doing, as he got up and headed for the door.
“Captain!” Kix caught him by the arm. “You can barely swallow, which means eating and drinking, both of which you need to do to get well, are going to be problematic. If you stay here, and rest, I can get you an IV and you’ll get better faster.”
Rex shook his head. As always, there was too much to be done. Better to work at partial efficiency for a while than zero percent efficiency. At least to make Kix feel better (and not because he was desperately thirsty) he took the cup of ice chips Kix had brought out earlier. The cold would be good for his throat.
*****
Kix watched with a scowl as Rex walked out. How was Rex even going to communicate with anyone?
Right, Rex did know some hand signs from his arc training. But the only people who could translate for him were other ARC’s…
Kix chuckled. The things he did to keep his patients in the medbay.
*****
Rex looked for Echo or Fives to help him “talk” to others. Try as he might, he couldn’t find Echo anywhere, but Fives was in the barracks, chatting with Hardcase about detonator yield.
Fives, with me he signed to the ARC.
Fives tilted his head. “Tooka got your tongue, Captain?”
Rex could almost swear he was hiding a smile. How many people knew he was sick already?
Rex motioned again, and walked back out.
Fives kicked Hardcase in farewell. “See yah later, ‘Case. Maybe we can go beyond theoretical and test some of your theories out.” Hardcase drummed on his legs in excitement.
*****
Those munitions storage, those food storage, Rex signed. A large shipment of new supplies had just come in, and needed to be inventoried and put away. Rex put himself in charge of directions, with Fives standing by.
Fives nodded. “Alright, those need to go to munitions, and those go to the food stores,” Fives said- switching the supplies.
Rex shook his head, and repeated himself.
“Ah, sorry Captain. Men, those go to munitions, and those go to food.”
More daggers in his throat as he swallowed some ice. Rex must have made a face, because Fives knocked his own vambrace against his. “You good there Captain?”
Rex nodded and shoved more ice in his mouth.
Thirty cases of the next bunch.
Fives turned to those offloading. “Woah men, too many! We need three, not thirty.”
Rex smacked Fives. Thirty, he signed again, making each motion sharp with his annoyance. Fives did learn ARC signals, right?
“Right right, thirty it is. Sorry brothers.”
Those are for the Commander.
“Bring these to General Skywalker’s room.”
Rex checked the registry and paled, before wildly waving his hands. He did not want to explain how a box full of female sanitation products ended up with the General.
T-A-N-O, he signed, letter by letter.
Fives laughed. “Oh, the Commander? Why didn’t you say so?”
Rex glared at Fives, before marching off to find Echo.
*****
Rex searched everywhere, but couldn’t find Echo. He even commed the Domino, but Echo was unusually silent.
Finally, Rex realized there was one place he hadn’t checked yet.
Echo was indeed in the medbay, helping Kix prep an empty bed with an IV drip and a cup of ice chips.
“Captain!” Kix said, all to cheerful. “Glad you could make it.”
You. Rex pointed at Kix. You did this.
“I don’t think the Captain’s too happy,” Echo remarked innocently. “He thinks you did something.”
“What? Captain, I never would do such a thing as telling Fives to forget his ARC signs for a day, and telling Echo to come here so he can help me prep your bed. Now, I suggest you take off your armor if you want to recover a semblance of comfort.”
Rex scowled at Kix, then accepted defeat by sitting on the bed and slowly stripping off his armor.
Once he was solely in his blacks, Kix pulled Rex’s sleeve up and stuck an IV in the crook of his elbow. “There. Hydration, nutrition, and even a small dose of painkillers because I’m so nice.”
Rex sighed, and gave Kix a thumbs up before sinking into the pillows.
Before Echo could leave, Rex gave him a couple signs, and Echo laughed.
“What did he say,” Kix said, curious.
“Oh I couldn’t repeat it. But the gist of it is, Fives better run when Rex is better.”
Hnnnng I told myself I'd restrain myself, bit I can't XD Can you do Oh No or Double Trouble for Rex XD I know those were in my ehhh 'list' XD
Thanks for the prompt! This is the last of these I’ll be doing, so please don’t send any more requests in! I got way more than I expected to get, which isn’t a bad thing at all and I’m super grateful for (and surprised by) all the requests I got, but now my brain is like “why are you doing this to me.” Thank y’all!
Double trouble— character is sick and injured
Rex hadn’t meant to let the cut on his arm go untreated for as long as he did. It was difficult to get things treated in the midst of endless battle after endless battle, and Rex hadn’t had time to go to any of the medics to get it looked at. It was a pretty long gash, but not very deep, so Rex figured it would probably be fine.
He didn’t really like the way that it was getting red around the edges and was hot to the touch, though. That didn’t really bode well, but it probably was fine for a little while longer. He’d get it looked at after this next battle. Ignoring the way his arm twinged with every movement and the waves of nausea that coursed through him with every step, he continued on with his duties and led the men from the very front as he always did, General Skywalker by his side.
Getting slammed against a wall and then falling off a short ledge in the midst of battle certainly hadn’t been in his plans for the battle, but it happened nonetheless. He heard someone yelling his name and jumping down into the small crevice he’d found himself in, but he was too busy blinking back stars and ignoring the way his arm was screaming at him to pay attention to who it was. Now his head hurt a lot, and he realized that his helmet had gotten knocked off at some point during that whole ordeal. Opening his eyes ever so slightly, he found himself looking up at Anakin’s worried face.
“Go back to the men, sir, I’ll be fine,” Rex managed. His stomach decided then was the time to do some flips, and he barely managed to roll over in time to throw up. His arm screamed in protest, and one of his ankles felt like it was twisted, if not worse, and he was somehow both cold and hot at once, but he’d be fine.
“Sith hells, Rex, you’re in rough shape,” Anakin said, obviously ignoring the fact that Rex had told him to leave.
“Sir, the men—“ Rex began as he rolled back over onto his back (with a little help from Anakin, although he didn’t really register that fact).
“Will be fine with Obi-Wan and Ahsoka in the lead. I’ll help take you back to camp and to the medics, and help them with anyone who got injured along the way, okay? There’s no way you’ll ever make it there on your own,” Anakin said, holding out a hand for Rex to take. Rex begrudgingly took it, but realized a moment too late that it was the wrong arm. He bit back a scream when Anakin pulled him up, causing Anakin to look at him in concern.
“What all’s hurt?” Anakin asked, using the force to call Rex’s helmet to him.
“Ankle, arm, head, nausea,” Rex muttered, “Not all of that’s new.” Anakin lifted an eyebrow at him but didn’t comment on anything, instead using his real hand to feel Rex’s forehead.
“And you’ve got a fever, Rex!” Anakin exclaimed, “Yeah, no way are you going back to that battle.”
Rex merely grunted in response. Anakin warned him that they were about to jump out of the little crevice they were in. Rex nodded, but as soon as they lifted up and landed, he nearly threw up again. There was a rushing behind his ears, and he gasped as pain overtook him. He could vaguely hear Anakin talking to him before he passed out.
Rex woke up to a very unhappy Kix standing by his bed, tapping this foot and looking at Rex expectantly. “Why, pray tell, did you not get that cut on your arm treated when it happened?” Kix demanded.
“Let a guy wake up first, Kix,” Rex muttered, gingerly sitting up in his bed, grimacing when his arm flared a little, along with the way his ankle protested at the movement..
“It got infected. Do you know how difficult it is for things to get infected with all the medical technology we have? If you’d taken 5 minutes to come get it looked at, it would’ve been fine, and I wouldn’t have had to fight for your life over something that was entirely avoidable,” Kix scolded, “Infections are deadly if they aren’t treated, Rex. If you hadn’t been injured out in the field today, by the time you came to finally get it checked, it may have been too late. We might have had to amputate your arm.”
Rex paled at the realization, eyes going wide. He really hadn’t thought it was that serious, but he certainly wasn’t the medic in the room.
Kix sighed and smiled at him kindly, “I’m just worried, is all, captain. I don’t mean to sound cruel. Just stating the facts. You’ve gotta take better care of yourself.”
Rex nodded, “Sorry, Kix. I won’t let that happen again.”
Kix smiled at him again, “I know you won’t. Now, General Skywalker was worried sick about you and I’m sure he’ll want to talk for a little bit. Should I let him in now, or let you sleep a little longer?”
Rex paused and sighed, “I suppose let him in now.” Kix went to go fetch the general, leaving a glass of water by Rex’s bedside.
Anakin came in not long after, going straight to Rex’s bed.
“I’m glad to see you looking much more… alive,” Anakin said as he sat down, “You passed out after I jumped out of that crevice. I had to carry you the whole way back— you are heavy!”
“Most of that’s the armor, probably. Adds about 70 pounds or so,” Rex said with a smirk, “But sorry about that, sir. You shouldn’t have had to leave the battle field because of one man.”
“When will you get it through that head of yours that I do that because I care about you guys? I would’ve done it for any of you. After I got you back here, I went back and helped with some of the other injured,” Anakin said, stroking his chin thoughtfully in a way that was reminiscent of General Kenobi, “We Jedi should do that more often.”
“I’m sure it would mean a lot to the men if you did,” Rex replied, “It’s not a horrible idea.” “Ah, that’s basically saying ‘I love that idea’ in Rex-speech, so I’ll take it. I’m gonna go check on some of the other men— just try and take better care of yourself next time, okay? I don’t know what I’d do if you weren’t with me. Probably go insane,” Anakin said, smiling and patting Rex’s shoulder as he drifted off to the next patient. Rex settled into his bed with a smile and slipped back into an easy slumber.
Many years later, after the Battle of Endor was won, Rex would find out from a certain blond-haired Jedi exactly what Anakin would do when Rex wasn’t with him.
AKA Forced Adoption
Cody trudges into the room tired and pissed. He’s had enough of this day already and he can already see Bly’s stupid karking smirk. It almost makes him turn around. Almost. If it wasn’t for the ever growing weight on his back he would’ve about-faced and said kark it. His burden grumbles as his steps falter when Bly’s smirk sharpens. He knows the comment is coming, he knows, and if his arms weren’t full he would be preparing to deck him.
“We’re not keeping him, huh?”
“Shut up Bly.” A verbal jab is all he can do without jostling the cadet on his back. He strides past him to set their bleeding vod’ika on the bench.
“Not two hours ago you were saying he had to stay with his own squad. What changed your mind so fast?” Bly hands him a clean cloth and some gauze. He gets to work with a huff.
“His squad jumped him again.”
“They really don’t like that he’s blonde that much.”
“Apparently.”
“Wait. Why were you even heading back that way to begin with?”
“I looked him up. He’s been transferred thirteen times for infighting. It’s a wonder that the Kaminiis haven’t decommissioned him yet.”
“You were going back to grab him anyway.”
The statement is said with so much barely contained glee. He feels his eyebrow twitch twice before he can stop it and finishes wrapping up the cadet’s wounds. Heaving him back into his arms he strides past his infuriating brother once more. There’s no way to answer Bly’s statement, not without making the bastard even more smug. Besides he has to figure out how to get his vod’ika into a sleeping pod and then convince Alpha that the kid should be transferred into their squad.
“Kark you’re so kriffing soft. Who would have thought it possible. Kote has gone soft.”
“Shut Up Bly!”
The captain is exhausted. He's been working on his dead trooper reports for way too long and isn't getting any progress. Too much paperwork, even for him.
At this point he's using all of his remaining energy to just keep his eyes open, but even that doesn't help much.
He has to do the reports, he has to. Otherwise the very existance of these long gone brothers would be never remembered, and that was not an option. He has a duty.
Though as much as he tries, as much as he forces himself to stay awake, it's no use. He's worked himself way too much..
..and he falls unconscious.
The papers and the datapad are just left there for another time for him to stress about them.
He really needs the sleep though..
Sometime later, Stiff enters quietly out the door to the Captain's quarters, coming to check up on him.
Just before that he was heading to the refresher at night, woken up from a nightmare which caused his adrenaline to flow and make him forget all of his wishes to sleep. Nor did Stiff feel like welcoming those nightmares anytime soon, so as he had passed the Captain's quarters, he thought about checking if he's sleeping for once. Knowing the tendencies of his blonde ori'vod, he's pretty sure he's overworking himself again.
He decided to check just to be sure.
The door opened with a tiny whiz as he entered the room quietly. He nearly sighed from relief that Rex had finally remembered to sleep as he saw how there were no lights on, but sadly he was mistaken.
The captain was indeed asleep, but seemingly not in a comfortable rest. He had, as expected, worked himself up again.
Stiff looked at Rex with a frown of sympathy written all over his face. 'I really hope he'd learn to take care of himself..' he thought.
Strangely, Stiff feels a lot of responsibility for taking care of the ones that don't seem to find selfcare so important.
Old habits die hard, I guess.
He thinks for a moment in hopes to find a way to help the captain.
Stiff leans to get a look of what kind of reports Rex had been filling up.
Fallen clone reports.
Well.. that's really nothing new to him. And neither his favourite thing to do. Quite the opposite.
But, he'd do anything to make someone feel better. In this case that someone is his brother who really needs it, even if he never asks for it.
Stiff goes on and carefully carries a chair next to Rex and starts reading the reports. He can't risk the light sleeper to wake up and get another sleepless night, so he has to be content with the little amount of light he gets from the datapad.
About an hour later he's done with them and the energy has gone from his body. Now the tired and sleepy clone can't believe how Rex can do this so often. Having to fill the reports of his dead men so often makes Stiff wonder if he would want to talk to someone. He knows Rex would immediately dismiss the offer of talking about his problems, but he needs it. No one should carry so much guilt, grief, and frustration just by themselves. Everyone needs a someone.
Stiff promises himself to ask Rex about it, whether or not he'd already know his answer.
He looks up from the table, having been deep in thought. How many times had he done that again? Sighing heavily, he throws the thoughts to the back of his head. 'I'll think more about that tomorrow.'
Stiff stands up and wonders what he's gonna do next. Maybe he should move him to his bed. The table isn't looking very comfortable to sleep on.
He knows that this brother if someone is the lightest sleeper ever, due to his alertness 24/7. Stiff has to make sure to be extra careful and not wake him up, since who knows how Rex would react to Stiff having done his work without context of why he even is in his room in the first place.
He has also carried his -passed out or injured- vods more than just a few times, so it's obviously nothing new.
After deciding, Stiff sits up from his chair, leaning down, carefully and quietly slithering his left hand under Rex's legs and right under his back. As gently as possible, resting him on the bed.
Waiting for a moment of making sure he didn't wake up, Rex shuffles to a comfortable sleeping position, sighs and relaxes.
Wow, he actually didn't wake up? Thank the maker.
Fortunately Rex had already taken off his upper armor so Stiff didn't have to accidentally shake him awake while taking off the rest.
After, he covers the sleeping captain -who's now on his blacks- with a warm blanket.
...Stiff hasn't seen such a peaceful expression on his face in forever...
Stiff also has to let him know that he did the work for him somehow..
Right, a note.
He looks around for clear paper and after finding, he ripped a piece of it and wrote a message on it for when Rex wakes up. He has to make sure the captain doesn't freak out that he had fallen asleep on his job.
"Don't worry Rex, I filled the reports for you. Hope you slept well :)
- Stiff"
..Is what he wrote, and of course with his signature smiley face.
With a content smile for his work and a hope for his ori'vod to be okay, he swiftly exited the room and went on to try and fall asleep again..
[ This was a pretty short one, but I hope you liked it! One of my first ever fanfics.. ]
Rex aaaand uh. A dog
This is such a galaxy brained prompt, thank you for this! The dog in this is based off of an Australian shepherd, by the way :)
——————
To say Rex was tired would be an understatement. He’d been traveling nonstop the past few weeks in an effort to avoid catching anyone’s attention. If he stayed in one place for too long, someone was bound to notice that he looked a little familiar, and they’d call the authorities. He had to keep moving. Such was the life of someone in the run from the Empire.
The war hadn’t been over for too long. Rex watched his men die in a crash, helpless to do anything to help them. They had been prisoners of their own minds, though, and in a backwards sort of way, Rex was glad they were dead. Anything was better than being turned into mindless droids.
Not long after that crash, Rex split up with Ahsoka, knowing that they’d be safer apart. She’d given him contact information to people she thought could help, and Rex busied himself trying to take down the Empire before it could sink its poisonous claws into every part of the galaxy.
This is how Rex found himself traveling alone. Truly and utterly alone.
He hated being alone; the clones were never meant to be without each other, and yet here he was. Sure, he ran into the Bad Batch at one point (traveling with a child, and wasn’t that a sight to behold), but he couldn’t stay with them for long. He helped them get rid of their chips and then went on his way, back to his lonesome travels.
He refused to let it bother him, though. He buried himself in his work against the Empire, hoping that that might distract him from his situation, and it worked sometimes. Still, his own thoughts would often betray him, and he still often turned to speak to people who were no longer with him. It was a tough habit to break.
Rex only stopped on Dantooine to get food and refuel his ship. He didn’t intend to stay for long. He’d be in and out within a couple of hours. Surely that wasn’t enough time for anyone to notice his presence.
It didn’t take long for him to realize that he was being followed on his way through the market. He cursed his luck and the fact that he’d jinxed himself by telling himself he wouldn’t be noticed before slipping into an alleyway, intent on taking out whoever had been tailing him.
He leaned against the wall and slowly took out his blaster, crouching behind a trash can. He heard footsteps approaching nearer to his position. His muscles tensed before he took a deep breath and jumped out of his hiding place, blaster pointed at the owner of the footsteps…
… and the owner was a dog. Rex huffed a sigh and put his blaster back in his holster. The dog had not been startled at all by Rex’s actions, its stub for a tail wiggling so much that its whole behind was shaking. Its tongue lolled out of its mouth as it looked up at Rex with mismatched eyes, one brown and the other so light a shade of blue that it was nearly white.
Rex hesitated, unsure of what to do next. He knelt down on his knees to get closer to the dog’s level, his movements slow so that the dog wouldn’t suddenly lash out at him. The dog sat down and held up one of its paws. Not knowing what else to do, Rex took it and shook it like he would shake hands with another human being. The dog then took that as an invitation to get close to Rex, as it curled up and pressed its body against him. Rex relaxed further and began scratching its back, causing the dog to lean further into him.
“Thanks, bud.” Rex muttered, smiling. He was then mortified to realize that he was nearly crying at this simple display of affection from a dog. The dog seemed to sense his emotions, as it turned and began licking his face before the tears could even fall, causing Rex to laugh.
“Okay, okay, thank you. I’ve got to go now, okay?” Rex said, standing up. He began to leave the alleyway, stopping short when he realized the dog was following him.
“You can’t come with me.” He said with a sigh. The dog merely wagged its stub and practically grinned up at him.
“I don’t have a way to take care of a dog, and I travel a lot in my tiny ship. You really wouldn’t like it.” Rex continued as he walked out of the alley. The dog walked beside him to his right.
Rex really couldn’t keep a dog. His lifestyle was not a good way for a dog to live. Besides, this one probably belonged to someone… but, it did look pretty skinny. Maybe it didn’t have anyone, just like Rex. Maybe it was just as alone as him.
Rex sighed, eyeing a veterinarian’s office down the road. He stopped and looked down at the dog at his side.
“Okay. Maybe you can come with me.”
The dog barked and wagged its stub. Rex smiled for the first time in months.
I just thought of a terrible, horrible, no good, very bad au where during Umbara it’s Rex that’s injured and he’s begging Kix to leave him behind so Kix can keep outrunning the tanks. And Kix still tells Rex he sounds like General Krell but he’s more frustrated and afraid than angry. Kix manages to group Rex with the rest of the wounded and Rex orders Kix to leave them behind and initially Kix is like no Fucking way I’m leaving you all out here but Rex reasons with him that he’s the only medic with the company right now and he had to keep moving with the group and Rex would keep an eye on and defend the rest of the wounded. At this point Kix knows he’s right so he leaves with them with a bunch of supplies and keeps going with Torrent. At the end of the battle when their recovering everyone’s like oh Kriff where’s Rex?! Did we loose him?! Is he dead?! And Kix speaks up and tells them he’s with the wounded, which spurts Fives and company to try and go back and look for them but in the name of progress and sacrifice Krell forbids it. He temporarily promotes Jesse to captain because i think at the time he was Rex’s lieutenant but mostly because Krell liked Jesse’s attitude more than he liked Five’s. The rest of the arc continues the way it originally did but with Jesse and fives at the lead. Meanwhile, Rex and like 25 other troops are lost in a foreign environment in the center of hostile territory on a planet far from any republic system, dwindling rations and medical supplies trying their best to live off the land for weeks. Rex had found a cave for the men to hide out in and made a camp there. Since he’s the captain and one of the least injured he goes out trying to locate and contact the gar while finding food and supplies. Between encounters with natural predators and Umbaran squads he always comes back more injured than he left. At this time Anakin gets back and he’s also like umm where’s Rex?? When the 501st tells him what happened he’s pissed and immediately goes out into the jungle to find Rex. And he does, just in time too because Rex had gotten his legs caught in a trap and was too injured to walk or fight and was surrounded by enemy Umbarans. Rex and the others wounded are rescued and get shipped of to a medical station for a while. When they get back hella comfort ensues and torrent is never letting Rex out of their sight again. Over the next few months however it’s clear that Rex has developed a significant amount of trauma and ptsd from the experience and is finding it hard to integrate back into and function within the gar.
I heard it’s “whumptober”
Here’s a rare piece form Cody POV.
Warnings; blood, injuries, barbed wire, off-screen pain for Rex I’m sorry.
Day 1: barbed wire
Keep reading
TW for Umbara's everything, except I traumatize Rex even further. I intend this to be something of a fix-it or at least hopeful, but like, there's implied suicidal thoughts and. lots of um. Heavy Angst. ask to tag please
The first time is horrible. Like. canon. Then he wakes up again at the beginning of the campaign and-
He's wary, and tries to tell himself that it's a dream. He knows it's not. He tries to change things but it doesn't end up too different than before.
He wakes up again. What's going on? He's still trying not to aggravate Krell too much, these lightsabers tearing through his men still haunting his dreams. He stands his ground more often than not but it's a dangerous game - again he loses.
He wakes up again. This must be some sick joke. Fives and Jesse - they know something is up. He tries to save as many men as he can, tries to stop the friendly fire before it can really begin - not much changes. It's him that kills Krell, but at what cost?
He wakes up again. He barely gets to his feet. He can't see themm all die again. He goes regardless, because what if he makes a difference this time? What if he manages to save them? The time loop is irrelevant as long as he gets another chance. He fails.
He wakes up again. Nothing works. He doesn't want to get his brothers killed, but he loses control of himself. Appo takes him aside, puts him on the side lines for this - they don't want to risk losing Rex. Everyone is worried. Rex just stumbles along like it's a fever dream. (If only.) Few things change.
He wakes up again. He just wants to scream. He tries a more offensive approach - Krell nearly loses his temper then and there. A part of him wonders if it would be better now than later, when even more have died. It sends the same as any other time.
He wakes up again. He doesn't have the energy to fight anymore. It's no use. But then Krell sends them against the 212th again - he snaps, he stops it from happening, and he directly confronts Krell once more. He refuses to back down. Krell reveals himself and - this time, Rex ends the day with a lightsaber through his guts.
He wakes up again. He can barely keep himself upright. He keeps feeling the phantom pains of his death - he keeps trying to push through. Nothing works out.
He wakes up again. He doesn't even try anymore.
He wakes up again. He can't do this anymore. He barely registers what's happening - he knows how it ends anyway. He struggles to separate this time from all the previous ones. He it hit by a stray bolt; Kix makes it to him just in time to see him die. At least this time he doesn't have to watch everyone else die.
He wakes up again. He barely speaks, drinks, does anything more than going through the needed motions to appear alive. He won't talk to anyone concerned about him. He can't do this anymore. However this ends - he just wants it to end. It doesn't.
He wakes up again. He shoots Krell on sight. Except Krell reflects the bolts back to him - Rex dies laughing and under the horrified gazes of everyone around him. What use is there in carrying on?
He wakes up again. His body refuses to get up. He doesn't care either way. Skywalker pries out of him what's up - it's a long and gruelling process, but the Force tells him that Rex speaks the truth. They try to change things, but even Anakin knows he can't just attack Krell like that. He still has a hard time actually believing it, too. He sends Ahsoka instead of himself and stays, and they end up with less casualties.
Then he gets called to the battle above the capital in an Umbaran fighter - he's the best pilot, after all. Rex stays, and it's going so well - but everything keeps gnawing at him, his living nightmares keep resurfacing, he crashes.
It's an Umbaran that hits him, but at least he now has an idea of how it might work. Maybe, if he's lucky, the time loop breaks when he saves them.
He wakes up again. Approaches Skywalker directly. Krell is greatly displeased when he sticks around and... it seems to work. And still, when Anakin is forced into the medbay, he sends them against the 212th. But Rex knows. He tells his men, has them marching without helmets on. They don't start firing and got to arrest Krell. This time, they have Skywalker on their side - and Krell still murders many of them, but only a fraction of the casualties of the other times. They execute him for treason - and with a Jedi on their side.
Then he wakes up again.
And for a horrible moment he thinks it's all starting again, it's not ending - before he notices he's still at the post they set up.
He stopped caring a long time ago, and as the realization hits that it's over and they made it and they're still alive he starts laughing and crying almost hysterically because... because they're alive.
And it's finally over.