U-BOATS UNLEASHED ON EAST COAST SHIPPING
Berlin, Germany · December 13, 1941 On this date in 1941, two days after Germany and the U.S. had declared war on each other, U‑boat Adm. Karl Doenitz initiated the Kriegsmarine’s wolf pack campaign against ill-prepared merchant shipping along the Canadian and U.S. eastern seaboards. (Wolf packs consisted of a group of U‑boats systematically attacking…














