~Updated Sunday, 14th June 2015.
This is just a really short headcanon. Sorry. I'll put something else later.

Spoiler Alert

Later, whenever they missed one of 'them', the ones who had died in the war, they would honor each person with something different. When it was Tris, which was most often, they would go zip lining. When it was Uriah, they would all go out for muffins. When it was Marlene, they would grab some paintball guns, and shoot each other in a game as if they were teenagers again. When it was Lynn, they would go to the local tattoo parlor, where they either got new tattoos or, once or twice, a piercing. When it was Will, they would play one of the old board games no one played anymore which he, with his Erudite curiosity, had been so interested in. They knew that 'they' wouldn't mind. They would be happy that they were remembered, and, yet, the ones they had left behind were happy.