SI have been researching korean war GI impression and I have noticed that most of them dont really wear the haversack at all. Even in combat footage and field operations? Did the GI just not carry the haversack at all? Because I have noticed in other wars they carried haversacks, so...
Truman Library - Truman Papers: Korean War File
Korean War: U.n. Troops Greeting Card
korean war photos
Just some example photos.