George Bowman was a Louisiana native that resigned his Army
Reserve commission to become a Naval Aviator in the Marine Corps.
He served in the Pacific where he earned the Bronze Star with V. He
would deploy to Korea and command Marine Air Group 12 and would
earn the Legion of Merit with V.

When he deployed to Vietnam in 1969m he served as Deputy
Commander Third Marine Amphibious Force. He retired as
commander of Camp Pendleton.
Robert Barrow was a Louisiana native that retired as Commandant of
the Marine Corps under Jimmy Carter and Ronald Reagan. Like most
Marines of his time he served in World War II, Korea and Vietnam. He
served with Chinese forces as opposed to the island hopping
campaign.

Although he earned the Navy Cross for his actions at Chosin he is
more known for his actions in Vietnam. While as commander of the
9th Marine Regiment in 1969 his unit fought Operation Dewey
Canyon. This was the only Marine Operation to cross into Laos in
order to break up North Vietnam’s troops and supplies there, and was
done at Barrow‘s discretion. This caused quite a stir back at the
Pentagon but was considered a success.
When Indiana native Foster LaHue completed OCS in 1941 he
probably did not realize he would one day retire Chief of Staff of the
Marine Corps as a Lieutenant General.

He served in the Pacific in various positions of the 4th Marine
Raider Battalion and entered the reserves only to be recalled for
the Korean War. He would command 3/1 Marines and earn the
Silver Star while there. LaHue would deploy to Vietnam as a
Brigadier General and command the Marines at the Battle of Hue
City.
Colonel David Lownds fought what is arguably the most famous battle
of the Vietnam War, yet very little is actually known about the
Chicopee, Massachusetts native. Unlike most Marines of his time he
did serve in the Pacific and was called back for Korea but did not
deploy.

He earned a Bronze Star for his work in the Dominican Republic and
would deploy to Vietnam to command the 26th Marine Regiment during
the 77 day siege of Khe Sahn where he would earn the Navy Cross.

I can not find anything that says he was ever promoted after that.
Atlanta, Georgia native Ray Davis would retire as Assistant
Commandant of the Marine Corps under Richard Nixon. He was typical
of Marines from that timeframe in that he served in the Pacific, Korea
and Vietnam.

He would make several island landings during the Second World War
and command a battalion during the Chosin Reservoir campaign of
Korea that would earn him the Medal of Honor. Asked what was the
toughest campaign he participated in he said Chosin. His own son
would be killed in action under his division’s command in Vietnam.
Victor Krulak was a Naval Academy Graduate that hailed from Colorado. He
is considered the most influencial Marine Corps officer after John Lejune.

He served on sea duty and in China subsequent to
World War Two. He
served as Holland Smith's Aid during the outbreak of the war. Krulak was
part of the development of the Higgins Boat. During Korea he would
become Chief of Staff of the 1st Marine Division. He would become
Commmander FMF Pacific during the Vietnam War where he helped
implement the small unit program to work on one village at a time.

He earned the Legion of Merit for all three Wars.