Curate, connect, and discover
P.S: training started as early as five (if the kid made it that long) this is cuz, even if they never made it to the frontlines ( if they got older they were allowed to specialised elsewhere like mechanic work, physical trauma care, full on wilderness training to be a scout etc etc. not everyone was a soldier ) first aid, wilderness, combat skills were essential for obvious reasons.
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Of course it first started out as very kid friendly games like ninja hide and seek and what not. Basically, think of their training as their version of our education. Also I didn’t include this but all the kids were taught to read and write as part of that training. Literacy is importance guys!