Letters home from basic training have changed less than most things about military life. Recruits still write about food, sleep, and the small comedies of shared bunks, the same subjects their grandparents wrote about decades earlier. What has changed is the pace. A recruit in an earlier era might wait weeks for a reply and compose a letter meant to stand on its own until the next one arrived. Today most training sites allow brief phone calls, so the letter has become something else: not the only line home, but the more considered one, written when there is finally a quiet half hour to fill.