The Atlantic was more than a sequence of convoy actions. It was the theatre through which supplies reached almost every other Allied front. Cargo for Russia did not travel only by the Arctic route; material for the Persian Corridor first crossed the Atlantic, rounded the Cape, entered the Indian Ocean and Persian Gulf, and then moved north. Operations at Stalingrad and Kursk, the Normandy landings, and Operation Torch depended on that wider maritime system. The same network supported North Africa, the Mediterranean, India, Burma, and Australia, alongside an expanding Pan-American Neutrality Zone. Some convoys passed without incident while the next fought continuously, so the theatre's tempo shifted without ending its logistical work. Sustained escorting kept the entire system working.
Chapter · 4:01-5:54
The Atlantic as the war's supply theatre
The Battle of the Atlantic was the supply system that made Allied campaigns from Russia and Burma to Australia possible.