Designed to locate and sink German U-boats in the Battle of the Atlantic, the escort carrier USS Bogue (CVE-9) became the most successful Anti-Submarine Warfare (ASW) carrier of World War II. This book covers the construction and commissioning of the Bogue, as well as the deployment of Naval Aviation composite squadrons that launched missions from the flight deck. Day-to-day operations are chronicled in comprehensive detail, along with developments in ASW tactics and the breaking of Germany's Enigma Naval Code, which enabled U.S. Navy forces in the Atlantic to take the offensive.