The Frogmen

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. Klinger in charge of a diversion to the more dangerous beach, where the main landing is scheduled.

During the mission, Lawrence cuts his leg on coral, and the diversionary section's pick-up boat receives a direct hit from artillery during pick-up operations, killing Klinger and most of his men. Lawrence sees that two frogmen, including Chief Jake Flannigan (Dana Andrews), are still in the water, but rather than risk loss of the information already gathered, orders a rescue boat launched and continues back to the transport. The rescue succeeds in recovering the two swimmers, but Lawrence's apparently cowardly action increases the unit's ill will toward him. An embittered Flannigan and some of the others request transfer to another unit, but Lawrence insists that they first complete the next day's mission to clear the new landing site for the invasion.

The next morning, Lawrence, who is sick with coral poisoning, does not reveal his illness when he puts Flannigan in charge of the mission and stays behind. Convinced now that Lawrence is a coward, the men angrily but efficiently complete their task, although "Pappy" Creighton (Jeffrey Hunter), whose brother is a U.S. Marine, sneaks onto the beach with Flannigan to leave a sign "welcoming" the Marines. Creighton is shot after the prank, but Flannigan tows him to the pick-up boat. Back on the ship, Creighton is put in traction because of the bullets in his spine, and Flannigan confesses to Lawrence that the prank caused Creighton's injuries. Lawrence furiously upbraids Flannigan for giving in to the prank, and soon all of the men request transfers.

While Lawrence is discussing the transfer requests with Vincent, a torpedo hits the ship but does not detonate. Lawrence volunteers to disarm the torpedo, which has lodged in the sick bay next to Creighton's bed, and with Flannigan's help, succeeds. Soon after, Lawrence receives orders to blow up a Japanese submarine pen, and tells the men that although it will be their last mission together, he is proud to have served with them. Although Flannigan voices disdain that Lawrence will again dodge dangerous duty, Lawrence leads the mission, which is discovered when one of the men accidentally trips a signal wire. Japanese sentries shoot at the men as they plant the charges, and Lawrence is stabbed in hand-to-hand combat with a Japanese diver. He orders Flannigan to leave him behind, but Flannigan tows him to safety. The mission is a success, and soon Lawrence is recuperating beside Creighton. Finally won over by Lawrence's bravery, the men show their acceptance of him by asking him to sign the portrait they have drawn of Cassidy to present to his widow.

• Richard Widmark as Lt. Cmdr. John Lawrence
• Dana Andrews as Chief Jake Flannigan
• Gary Merrill as Lt. Cmdr. Pete Vincent
• Jeffrey Hunter as "Pappy" Creighton
• Warren Stevens as Ralph Hodges
• Robert Wagner as Lt. (jg) Franklin
• Harvey Lembeck as Marvin W. "Canarsie" Mikowsky
• Robert Rockwell as Lt. Bill Doyle
• Henry Slate as "Sleepy"

Producer Paul Short of Allied Artists protested the use of the title The Frogmen by Twentieth Century-Fox, asserting that he had established prior claim to it. Eventually, Short dropped his claim and Twentieth Century-Fox was allowed to use the title. Short's production was never made. Several major studios were interested in producing films about the Underwater Demolition Teams, but only Twentieth Century-Fox obtained an exclusive guarantee of cooperation from the U.S. Navy.

Henry Hathaway, one of the studio's most well received directors, was originally set to direct the film, which was to feature Millard Mitchell in a starring role. Richard Conte was also originally set to play "Pete Vincent", while Jack Elam was first cast as "Sleepy", and Craig Hill was set to play "Lt. J. G. Franklin". Assistant director Dick Mayberry briefly filled in for director Lloyd Bacon when Bacon fell ill with influenza.

Producer Sam Engel wrote an original story, titled "Frogmen in Korea", as an intended follow-up to The Frogmen, but the project soon dissolved. A one-hour television remake of The Frogmen, titled Deep Water, was broadcast in May 1957 on The 20th Century Fox Hour. The program was directed by Roy Del Ruth and starred Ralph Meeker (Lawrence), James Whitmore (Flannigan), and Richard Arlen (Vincent).

Because working conditions for The Frogmen were deemed too "riotous" for women, all female roles were written out of the screenplay and none appeared in the completed film. Jack Warden makes an uncredited appearance in the beginning of the film as a crew member of the transport ship.

Co-star Gary Merrill, in the role of the captain of UDT-4's transport ship, delivers the line of dialog, "Looks like you've got what amounts to a legal mutiny on your hands", that is virtually identical to a line that he spoke two years earlier in the World War II Army Air Force drama Twelve O'Clock High.

The filming of the submarine sequence took place on the deck of USS Kleinsmith (APD-134) while the ship was off Key West, FL on 11 January 1951. Much of the boat and high-speed transport scenes were shot between 15 January and 6 February 1951 from the deck of Kleinsmith, while the ship was off St. Thomas, U.S. Virgin Islands.^[3] USS Taconic (AGC-17) appeared as the command ship. As spoken in dialog, the submarine's name sounds like "USS Jackass 259", but is actually "USS Jack SS-259". The real USS Jack (SS-259) was not actually used in the film, as it was not in commission at the time.

Many United States Navy SEALs have cited this film as their inspiration for joining the SEAL Teams, including Richard Marcinko (the first Commanding Officer of SEAL Team Six and Red Cell), the Medal of Honor recipient Michael E. Thornton, and Dennis Chalker.^{[citation needed]}

• List of films featuring the United States Navy SEALs

Film critic Manny Farber, in The Nation, July 14, 1951 wrote: "Frogmen is a new type of movie experience roughly equivalent to reading Tom Swift in Braille at the bottom of a well."^[4] Farber added that "one virtue of the 20th-Century-Fox films is that they are cast with manly males of the advertising-executive type who reject the kind of pansy-brained, floor-walker's poetic technique that has become a lauded acting style in most Hollywood films."^[5]

• List of films featuring the United States Navy SEALs

• Farber, Manny. 2009. Farber on Film: The Complete Film Writings of Manny Farber. Edited by Robert Polito. Library of America. ISBN 978-1-59853-050-6

• The Frogmen at IMDb