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Medal of Honor Recipient

Leonard Foster Mason

U.S. Marine Corps · World War II

MOH-RC-002926Source-based record

The award

Representative medal image: Navy design with a neck ribbon. Not a portrait or a photograph of this recipient’s own medal.
Navy Medal of HonorAction-era reference: 1944

Portrait not yet available. Representative medal shown.

About this image

Presentation date is not usable for design selection. This is an action-era reference; a later presentation or replacement medal may differ. This is a design-transition year; selection by year does not establish the exact presentation-day form.

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Medal of Honor

1944-07-22

Asan-Adelup Beachhead, Guam, Marianas Islands

Rank at action
Private First Class
Service
U.S. Marine Corps
Conflict
World War II
Unit or command
2d Battalion, 3d Marines, 3d Marine Division

The Citation

Sources ↓
For conspicuous gallantry and intrepidity at the risk of his life above and beyond the call of duty as an automatic rifleman serving with the 2d Battalion, 3d Marines, 3d Marine Division, in action against enemy Japanese forces on the Asan-Adelup Beachhead, Guam, Marianas Islands on 22 July 1944. Suddenly taken under fire by 2 enemy machineguns not more than 15 yards away while clearing out hostile positions holding up the advance of his platoon through a narrow gully, Pfc. Mason, alone and entirely on his own initiative, climbed out of the gully and moved parallel to it toward the rear of the enemy position. Although fired upon immediately by hostile riflemen from a higher position and wounded repeatedly in the arm and shoulder, Pfc. Mason grimly pressed forward and had just reached his objective when hit again by a burst of enemy machinegun fire, causing a critical wound to which he later succumbed. With valiant disregard for his own peril, he persevered, clearing out the hostile position, killing 5 Japanese, wounding another and then rejoining his platoon to report the results of his action before consenting to be evacuated. His exceptionally heroic act in the face of almost certain death enabled his platoon to accomplish its mission and reflects the highest credit upon Pfc. Mason and the U.S. Naval Service. He gallantly gave his life for his country.

Sources & record notes

General Order comparison: pending. Current-profile review does not mean that the underlying original order has been examined.

  1. Leonard Foster Mason — Congressional Medal of Honor Society recipient profile ↗Congressional Medal of Honor Society · Checked 2026-09-01

    current identity, service, action metadata, and citation comparison

Transcription, metadata & provenance notes
Award ID
MOH-AW-002941
Transcription status
Legacy full text · current reference profile matched
Last source check
2026-09-01
Accredited to
Ohio
Archive transcription SHA-256
397b67b22ea866f7253f929db8a7027e4b5af50730ab8cf1ecccffd5da108ebb

Legacy transcription retained without substantive editing; rendered current reference profile comparison is documented in the Phase 10 evidence snapshot.

Current official reference profile confirms identity and core action metadata; exact legacy citation text and checksum are retained; General Order comparison remains pending.