Hi, Vehicle markings of the Big Red One seem to be under-studied, and I am trying to do some more research. BRO vehicles seem to have (1) letter coded markings, (2) yellow/black tactical marking and (3) Preparation for Overseas Movement markings. See below. But I am still trying to figure out the variations of yellow/black markings. The 29th Infantry Division used similar markings (see below). Can someone help me with this?