The Battle of the Atlantic was the longest fight of WWII — raging from 1939 to 1945. This crucial naval campaign shaped the war's outcome, with Allied ships battling German U-boats to keep supply lines alive. Russia, relying on these supply routes for critical aid, was deeply impacted by the outcome. From: Battlezone S14 Ep2 | War Stories

As we approach the 80th anniversary of D-Day "Lectures in History" looks at the World War II Battle of the Atlantic. Sit in on a class with Notre Dame military history professor Ian Ona Johnson on the contest for control of Atlantic sea routes. Watch, Saturday, 8pm ET on C-SPAN 2 https://www.c-span.org/video/?530322-1/world-war-ii-battle-atlantic | American History TV