Richard C. Mangrum was born on October 27, 1906, in Seattle, Washington.
 He graduated from the University of Washington in 1928.
 Mangrum then enlisted in the United States Marine Corps to become a naval aviator.
 He completed flight training on August 20, 1929, and was commissioned a second lieutenant shortly thereafter.

On December 7, 1941, Mangrum, then with VMSB-232, was at Pearl Harbor.
Twenty of his squadron's SBD Dauntless dive bombers were destroyed on the tarmac at Marine Corps Air Station Ewa.
During the early months of the Guadalcanal Campaign in 1942, he commanded VMSB-232, the first scout bomber squadron to join the Cactus Air Force.
 On August 20, Mangrum's dozen Douglas SBD Dauntless dive bombers launched from the deck of the USS Long Island (CVE-1) escorted by Grumman F4F Wildcats from Maj John Smith's VMF-223 to become the first Marine planes to land on the new airfield that had just been constructed.
 They were met on the tarmac by Alexander Vandegrift then commanding general of the 1st Marine Division.
 He was awarded the Navy Cross and Distinguished Flying Cross for successful attacks on Japanese naval units during engagements such as the Battle of the Eastern Solomons.
 During his first 29 days ashore during the battle, Mangrum flew 28 missions including ten strikes, eight searches and seven reconnaissance patrols in support of both ground and naval forces.

  Mangrum left Guadalcanal on October 14, 1942, as the only pilot from his squadron able to walk away from Henderson Field.
 Seven had been killed, four were wounded and all of the others had been flown out for hospitalization.
 Returning to the United States, he served as commanding officer, Cadet Regiment at Naval Air Training Center, Corpus Christi, Texas from 1943 to 1944.
He commanded Marine Aircraft Group 93 from May to October 1944, then returned to overseas duty in the Pacific, serving as chief of staff, 3rd Marine Aircraft Wing until January 1945.
Mangrum was awarded the Legion of Merit as commanding officer of Marine Aircraft Group 45, based on Ulithi, Western Caroline Islands, until October 1945.

He returned to the United States at the end of World War II, and was assigned duty in Headquarters Marine Corps to re-activate the Marine Corps Reserve aviation organization, serving until July 1948.
He was a graduate of the Naval War College Senior Course in 1949, and from 1949 to 1951, served on the faculty in the Strategy and Tactics Department.

Mangrum was awarded a second Legion of Merit with Combat "V" during the Korean War, 1951, for duty as commanding officer, Marine Aircraft Group 12.
Later, he was awarded the Navy Commendation Medal with Combat "V" as First Marine Aircraft Wing liaison officer to Headquarters, 5th Air Force in Seoul, Korea, in 1952.

Returning to the United States, Mangrum served as deputy director, Marine Corps Educational Center, Marine Corps Schools, Marine Corps Base Quantico, Virginia, from 1952 to 1954.
He commanded Marine Corps Air Station Miami from 1954 to 1955 and Marine Aircraft Group 31 (MAG-31) (Reinforced) from 1955 to 1956.
He also commanded the Marine Air-Ground Landing Force in Atlantic Fleet amphibious exercises before going to Washington, D.C. in June 1956.

He was promoted to brigadier general on July 1, 1956, and served as deputy assistant chief of staff, G-3, for strategic plans and Joint Chiefs of Staff matters.

Mangrum served with the 1st Marine Aircraft Wing in Japan, February 1959, as assistant wing commander.
He was promoted to major general on November 1, 1959, and served as the commanding general of the 1st Marine Aircraft Wing until April 1960.

He then served as deputy commander, Fleet Marine Force, Atlantic, 1960–1961, and later commanding general, 2nd Marine Aircraft Wing, October 1961 to August 1963.
General Mangrum was named director, Marine Corps Educational Center, Quantico, and served there from 1963 to 1965.

On October 1, 1965, General Mangrum succeeded to the title "Gray Eagle" of Naval Aviation, becoming the first Marine Aviator to attain this distinction.
The "Gray Eagle" is the
Richard C. Mangrum was born on October 27, 1906, in Seattle, Washington.  He graduated from the University of Washington in 1928.  Mangrum then enlisted in the United States Marine Corps to become a naval aviator.  He completed flight training on August 20, 1929, and was commissioned a second lieutenant shortly thereafter.
On December 7, 1941, Mangrum, then with VMSB-232, was at Pearl Harbor. Twenty of his squadron's SBD Dauntless dive bombers were destroyed on the tarmac at Marine Corps Air Station Ewa. During the early months of the Guadalcanal Campaign in 1942, he commanded VMSB-232, the first scout bomber squadron to join the Cactus Air Force.  On August 20, Mangrum's dozen Douglas SBD Dauntless dive bombers launched from the deck of the USS Long Island (CVE-1) escorted by Grumman F4F Wildcats from Maj John Smith's VMF-223 to become the first Marine planes to land on the new airfield that had just been constructed.  They were met on the tarmac by Alexander Vandegrift then commanding general of the 1st Marine Division.  He was awarded the Navy Cross and Distinguished Flying Cross for successful attacks on Japanese naval units during engagements such as the Battle of the Eastern Solomons.  During his first 29 days ashore during the battle, Mangrum flew 28 missions including ten strikes, eight searches and seven reconnaissance patrols in support of both ground and naval forces.
  Mangrum left Guadalcanal on October 14, 1942, as the only pilot from his squadron able to walk away from Henderson Field.  Seven had been killed, four were wounded and all of the others had been flown out for hospitalization.  Returning to the United States, he served as commanding officer, Cadet Regiment at Naval Air Training Center, Corpus Christi, Texas from 1943 to 1944. He commanded Marine Aircraft Group 93 from May to October 1944, then returned to overseas duty in the Pacific, serving as chief of staff, 3rd Marine Aircraft Wing until January 1945. Mangrum was awarded the Legion of Merit as commanding officer of Marine Aircraft Group 45, based on Ulithi, Western Caroline Islands, until October 1945.
He returned to the United States at the end of World War II, and was assigned duty in Headquarters Marine Corps to re-activate the Marine Corps Reserve aviation organization, serving until July 1948. He was a graduate of the Naval War College Senior Course in 1949, and from 1949 to 1951, served on the faculty in the Strategy and Tactics Department.
Mangrum was awarded a second Legion of Merit with Combat "V" during the Korean War, 1951, for duty as commanding officer, Marine Aircraft Group 12. Later, he was awarded the Navy Commendation Medal with Combat "V" as First Marine Aircraft Wing liaison officer to Headquarters, 5th Air Force in Seoul, Korea, in 1952.
Returning to the United States, Mangrum served as deputy director, Marine Corps Educational Center, Marine Corps Schools, Marine Corps Base Quantico, Virginia, from 1952 to 1954. He commanded Marine Corps Air Station Miami from 1954 to 1955 and Marine Aircraft Group 31 (MAG-31) (Reinforced) from 1955 to 1956. He also commanded the Marine Air-Ground Landing Force in Atlantic Fleet amphibious exercises before going to Washington, D.C. in June 1956.
He was promoted to brigadier general on July 1, 1956, and served as deputy assistant chief of staff, G-3, for strategic plans and Joint Chiefs of Staff matters.
Mangrum served with the 1st Marine Aircraft Wing in Japan, February 1959, as assistant wing commander. He was promoted to major general on November 1, 1959, and served as the commanding general of the 1st Marine Aircraft Wing until April 1960.
He then served as deputy commander, Fleet Marine Force, Atlantic, 1960–1961, and later commanding general, 2nd Marine Aircraft Wing, October 1961 to August 1963. General Mangrum was named director, Marine Corps Educational Center, Quantico, and served there from 1963 to 1965.
On October 1, 1965, General Mangrum succeeded to the title "Gray Eagle" of Naval Aviation, becoming the first Marine Aviator to attain this distinction. The "Gray Eagle" is the
Richard C. Mangrum