I make it a point to notice the service ribbons worn by General Officers on teevee. General Pace may well be the very last General Officer on active duty who actually served in boots-on-the-ground combat (1968) in Vietnam.
snip:
General Pace was born in Brooklyn, NY and grew up in Teaneck, NJ. A 1967 graduate of the United States Naval Academy, he holds a Master’s Degree in Business Administration from George Washington University and attended Harvard University for the Senior Executives in National and International Security program. The General is also a graduate of the Infantry Officers’ Advanced Course at Fort Benning, Ga.; the Marine Corps Command and Staff College, in Quantico, VA; and the National War College, at Ft. McNair, Washington, DC.
In 1968, upon completion of The Basic School, Quantico, Va., General Pace was assigned to the 2d Battalion, 5th Marines, 1st Marine Division in the Republic of Vietnam, serving first as a Rifle Platoon Leader and subsequently as Assistant Operations Officer.
http://www.defenselink.mil/bios/biographydetail.aspx?biographyid=85
Great question. There must be a database somewhere of general officers on active duty with the USMC or US Army who served as combat officers in Vietnam. The youngest of them would have to have been born in 1952 to have been 2LTs before the US Congress forced the POTUS to pull our troops out. Like General Pace, they'd be prety senior Generals by now, with a lot of service (nearly 45 years).