Conversation so far:
When did Robert Mueller serve with the Marines?
In the summer of 1968, he served in Vietnam as a rifle platoon leader as a second lieutenant with Second Platoon, H Company, 2nd Battalion, 4th Marines, 3rd Marine Division.
Did Robert Mueller receive any awards serving with the Marines in South Vietnam?
Mueller received a Bronze Star for heroism and a Purple Heart.

Question: Did he serve any wars?
Self-contained rewrite: Did Robert Mueller serve in any wars?