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Medal of Honor Recipient

Merlyn Hans Dethlefsen

U.S. Air Force · Vietnam War

MOH-RC-000432Source-based record

The award

Representative medal image: Air Force design introduced in 1965. Not a portrait or a photograph of this recipient’s own medal.
Air Force Medal of HonorAction-era reference: 1967

Portrait not yet available. Representative medal shown.

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Medal of Honor

March 10, 1967

Thai Nguyen, North Vietnam

Rank at action
Captain
Service
U.S. Air Force
Conflict
Vietnam War
Unit or command
354th Tactical Fighter Squadron, Takhli Royal Thai Air Force Base, Thailand

The Citation

Sources ↓
Maj. Dethlefsen was 1 of a flight of F-105 aircraft engaged in a fire suppression mission designed to destroy a key antiaircraft defensive complex containing surface-to-air missiles (SAM), an exceptionally heavy concentration of antiaircraft artillery, and other automatic weapons. The defensive network was situated to dominate the approach and provide protection to an important North Vietnam industrial center that was scheduled to be attacked by fighter bombers immediately after the strike by Maj. Dethlefsen's flight. In the initial attack on the defensive complex the lead aircraft was crippled, and Maj. Dethlefsen's aircraft was extensively damaged by the intense enemy fire. Realizing that the success of the impending fighter bomber attack on the center now depended on his ability to effectively suppress the defensive fire, Maj. Dethlefsen ignored the enemy's overwhelming firepower and the damage to his aircraft and pressed his attack. Despite a continuing hail of antiaircraft fire, deadly surface-to-air missiles, and counterattacks by MIG interceptors, Maj. Dethlefsen flew repeated close range strikes to silence the enemy defensive positions with bombs and cannon fire. His action in rendering ineffective the defensive SAM and antiaircraft artillery sites enabled the ensuing fighter bombers to strike successfully the important industrial target without loss or damage to their aircraft, thereby appreciably reducing the enemy's ability to provide essential war material. Maj. Dethlefsen's consummate skill and selfless dedication to this significant mission were in keeping with the highest traditions of the U.S. Air Force and reflect great credit upon himself and the Armed Forces of his country.

Sources & record notes

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

  1. Merlyn Hans Dethlefsen — current Society profile ↗Congressional Medal of Honor Society · Checked 2026-08-26

    current identity, service, action metadata, and citation comparison

Transcription, metadata & provenance notes
Award ID
MOH-AW-000438
Transcription status
Legacy full text · current reference profile matched
Last source check
2026-08-26
Later or highest recorded rank
Major
Entered service at
Royal, Iowa
Archive transcription SHA-256
38556825ac04b7c30f4e42dd0f2eeb6cd3e50cc11b9049f58f74995ddbbf8db6

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

Captain is retained as the rank at the time of action and Major as the profile/later rank; the current profile supplies the full squadron and base assignment and historical action place.