In their 75 years building, fighting and serving on every continent – even Antarctica – only one Navy Seabee has been bestowed with the Medal of Honor, the nation's highest award for valor in combat.
Marvin G. Shields was a third-class construction mechanic with Naval Mobile Construction Battalion 11 and assigned to a nine-member Seabee team at a small camp near Dong Xoai, Vietnam. The camp housed Army Green Berets with 5th Special Forces Group, who were advising a force of Vietnamese soldiers including 400 local Montagnards.
Shields, then 25, who enlisted in 1962, was killed in an intense 1965 battle in Vietnam. His actions under fire led to the posthumous medal, awarded in 1966, "for conspicuous gallantry and intrepidity at the risk of his life above and beyond the call of duty."
So far he is the only Seabee to receive the Medal of Honor.
On June 10, 1965, Dong Xoai came under heavy fire from a regimental-sized Viet Cong force, who pummeled the camp with machine guns and heavy weapons. The initial attack wounded Shields but didn't stop him.
"Shields continued to resupply his fellow Americans who needed ammunition and to return the enemy fire for a period of approximately three hours, at which time the Viet Cong launched a massive attack at close range with flame-throwers, hand grenades and small-arms fire," his award citation states. "Wounded a second time during this attack, Shields nevertheless assisted in carrying a more critically wounded man to safety, and then resumed firing at the enemy for four more hours."
Still, Shields kept fighting.
"When the commander asked for a volunteer to accompany him in an attempt to knock out an enemy machinegun emplacement which was endangering the lives of all personnel in the compound because of the accuracy of its fire, Shields unhesitatingly volunteered for this extremely hazardous mission," reads the citation. "Proceeding toward their objective with a 3.5-inch rocket launcher, they succeeded in destroying the enemy machinegun emplacement, thus undoubtedly saving the lives of many of their fellow servicemen in the compound."
But hostile fire ultimately got Shields, mortally wounding him as he was taking cover.
"His heroic initiative and great personal valor in the face of intense enemy fire sustain and enhance the finest traditions of the U.S. Naval Service," the citation states.
The five-day Battle of Dong Xoai also garnered a Medal of Honor for a junior Green Beret officer, 2nd Lt. Charles Q. Williams, who was wounded several times in the battle and survived the war.
Shields' unit – Seabee Team 1104 – had come together just four months before the attack on their Dong Xoai camp, Frank Peterlin, the team's officer-in-charge, recalled in a 2015 Navy news article about the Navy's 50th commemoration of the battle and Shields' award.
"In the evening, he [Shields] would have his guitar at his side and would love to sing and dance, especially with the Cambodian troops at our first camp," said Peterlin, who attended the ceremony. "Marvin was always upbeat. At Dong Xoai, he was joking and encouraging his teammates throughout the battle." Peterlin, a lieutenant junior-grade at the time, was wounded amid the fight and earned the Silver Star medal for his actions leading the men.
Shields, who was survived by his wife and young daughter, has been long remembered by Port Townsend, Washington, his hometown.
At the time of his death, the Port Townsend Leader newspaper wrote of him and his service: "A 1958 graduate of Port Townsend High School, Shields was one of the first employees on the Mineral Basin in Mining Development at Hyder, Alaska, when the locally organized project was initiated there by Walt Moa of Discovery Bay. He worked at Mineral Basin during the summer before graduating from school and returned there as a full time construction worker in 1958. He was called into the Navy early in 1962, and was due to be discharged in January."
The Navy honored his memory with a frigate in his name (retired in 1992). The official U.S. Navy Seabee Museum in Port Hueneme, California, has a large display about him its Hall of Heroes. Navy Seabees have never forgotten Shields, who is buried in Gardiner, Washington. Inscribed on his black-granite headstone is this: "He died as he lived, for his friends."