The Things They Carried "The Ghost Soldiers" pg 180-207

In the chapter "The Ghost Soldiers" Tim talks about how he gets shot twice and Bob Jorgenson botches up the patch job when he got shot in the butt and Tim gets very bitter about it. He then gets transferred to a new facility and soon Jorgenson joins him. 

“They were still my buddies, at least on one level, but once you leave the boonies, the whole comrade business gets turned around. You become a civilian. You forfeit membership in the family, the blood fraternity, and no matter how hard you try, you can’t pretend to be part of it.”

This quote explains how Tim feels like he got kicked out of his military family once he was transferred to a different part of the war.