Approximately 293,000 USAF Airmen (counting officers) served in Vietnam. Over 5,000 US Aircrewmen were killed in the war, from all branches.
Discounting Airman, Marines, and Sailors: Over 38,000 US Soldiers were killed in Vietnam.
About 2.1 million American served in Vietnam.
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2.1 million served in Vietnam.
Michigan sacrificed 2,654 men in Vietnam.
Approximately 2,594,000 US Servicemen served in the Vietnam War.
About 170,000 served; approximately 3,070 died.
all marines
Approximately 2,594,000 US servicemen served in the Vietnam War.
The website, "Vietnam War casualties" might be helpful.
There were 1.1 million combat veterans of the war. There were 2.6 million American who served "in country", in South Vietnam. As of 2004 there were 8.2 million "Vietnam Era" veterans, but of course many of these served in other places.
About 25,000 US servicemen 20 and younger were killed in Vietnam.