No, Elvis Presley did not fight in the Vietnam war.
Of course! Everybody has to fight the Vietnam War because they wanted to stop the Battle and they have to show some guts to fight in the Vietnam War.
Plenty of US Servicemen of Irish descent fought in the war, but Ireland did not fight in the Vietnam War.
North Vietnam=Air War South Vietnam=Ground & Riverine War
Many who didn't have to fight the war, were for it. Many who had to fight the war, were against it.
Conscripts, or soldiers, marines and sailors who were drafted into service for two years, did fight in the Vietnam War.
The "Air War" was fought over North Vietnam. The "Ground War" was fought in South Vietnam.
We fought France>
To fight communism.