Destroyer Escort Anti Submarine Warfare US Navy WW2 ( Video ) September 21, 2017 Nicola US Navy WW2 Destroyer EscortThis film is about the story of the destroyer escorts and their services in the U.S. Navy it shows the construction and launch of the USS Frament (DE-677) in June 28 1943 and USS Brennan (DE-13) in August 22 1942.