Colonel Justice Marion Chambers (February 2, 1908 – July 29, 1982) was a United States Marine Corps officer who received the Medal of Honor for actions in World War II during the Iwo Jima campaign.

But by "fearless disregard for his own life" and leading his depleted battalion "by example rather than command," Chambers won the key heights and anchored the right flank of the Marines' position.

He initially received the Navy Cross for his actions, but upon re-examination of the original recommendation with additional evidence, his award was upgraded to the Medal of Honor a few years later.

[1] Chambers was appointed in 1962 by President John F. Kennedy to the post of deputy director of the Office of Emergency Planning, where he served with distinction until his retirement.

The President of the United States in the name of The Congress takes pride in presenting the MEDAL OF HONOR to For service as set forth in the following CITATION: For conspicuous gallantry and intrepidity at the risk of his life above and beyond the call of duty as commanding officer of the 3d Assault Battalion Landing Team, 25th Marines, 4th Marine Division, in action against enemy Japanese forces on Iwo Jima, Volcano Islands, from 19 to 22 February 1945.

Chambers led the 8-hour battle to carry the flanking ridge top and reduce the enemy's fields of aimed fire, thus protecting the vital foothold gained.

His zealous fighting spirit undiminished despite terrific casualties and the loss of most of his key officers, he again reorganized his troops for renewed attack against the enemy's main line of resistance and was directing the fire of the rocket platoon when he fell, critically wounded.

Chambers, by forceful leadership, courage, and fortitude in the face of staggering odds, was directly instrumental in insuring the success of subsequent operations of the 5th Amphibious Corps on Iwo Jima, thereby sustaining and enhancing the finest traditions of the U.S.

[3] Citation: The President of the United States of America takes pleasure in presenting the Silver Star to Major Justice Marion Chambers (MCSN: 0-4796), United States Marine Corps Reserve, for conspicuous gallantry and intrepidity in action while attached to the First Marine Raider Battalion during the seizure of Tulagi, Solomon Islands, from enemy Japanese forces, on the night of August 7–8, 1942.