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American Soldiers preparing to land in Nazi-Collaborationist French North Africa, in America's first major involvement in the European Theatre in World War 2 (November 1942)
(lemmy.blahaj.zone)
Technically called the european theatre but more like the european-north african-middleeastern theater.
How does the corporal stand to the others in the picture?
Here you go. They're listed in ascending order, left to right, top to bottom. The only exception is Specialist and Corporal. Those are both E4 rank. The difference depends on if the job is combat arms, or not. Corporal is combat arms, specialist is not. The guy with the armband that has a visible M on it is Military Police. They have ranks, but they're considered outside of the hierarchy while on duty, which is essential for them to be able to effectively do their jobs. That's why his armband covers his rank.