A Brief History of Anti-Submarine Warfare

Unrestricted U-boat Warfare

In May 1944, the USS England (DE-635) made history by sinking six Japanese submarines in just 12 days—a record unmatched in naval warfare. Using the new Hedgehog anti-submarine mortar, intelligence from U.S. codebreakers, and exceptional crew skill under Lieutenant Commander Walton B. Pendleton, the destroyer escort hunted down every sub in Japan’s “NA” line—I-16, RO-106, RO-104, RO-116, RO-108, and RO-105. Named after Ensign John C. England, who died saving shipmates at Pearl Harbor, the ship’s

A Navy Surface Action Group Sure Isn't What It Used to Be