The Frogmen is a 1951 American black-and-white World War II drama film from Twentieth Century Fox, produced by Samuel G. Engel, directed by Lloyd Bacon, that stars Richard Widmark, Dana Andrews, and Gary Merrill. The film's storyline is based on operations by United States Navy Underwater Demolition Teams, popularly known as "frogmen", against the Japanese Army and naval forces. It was the first such film about scuba diving and became a popular cultural hit. Following the opening credits, The Frogmen has an on-screen written statement: "This is a true story based on incidents which occurred in the latter part of World War II. It deals with one of the most hazardous and unique branches of the Armed Forces ... the Underwater Demolition Teams. This film could not have been produced without the active cooperation of the Department of Defense and the United States Navy". Underwater Demolition Teams have been used since World War II for reconnaissance duties, clearing underwater obstacles planted by the enemy, advance landings on beaches, and offensive underwater attacks on enemy ships; they were the forerunners of the Navy SEALs. At the 24th Academy Awards for films from 1951, the film was nominated for Best Cinematography (Black-and-White) for Norbert Brodine and Best Screenplay (Motion Picture Story) for Oscar Millard. However, the award for Cinematography went to A Place in the Sun (William C. Mellor) while the Story award went to Seven Days to Noon (Paul Dehn and James Bernard). Plot During World War II, Navy Lt. Cmdr. John Lawrence (Richard Widmark), a strict disciplinarian, is put in charge of Underwater Demolition Team 4 after its former leader, Lt. Cmdr. Jack Cassidy, is killed in action. The unit's men are distrustful of the professionally aloof Lawrence, and the relationship immediately takes a turn for the worse when they brawl with sailors aboard their transport ship. The ship's captain, Lt. Cmdr. Pete Vincent (Gary Merrill), understands the natural resentment the elite UDT men feel over the death of Cassidy, which they have transferred to Lawrence, and offers to go easy on the team at captain's mast. The "by-the-book" Lawrence, however, elects to hold his own mast and disciplines the entire team just before a dangerous reconnaissance mission to ascertain the safest landing beach during an upcoming invasion of a Japanese-held island. Lawrence is scornfully perceived as afraid when he splits up the platoon and puts team executive officer Lt.