Battle of the Atlantic
September 3, 1939 – May 8, 1945 · Battle of the Atlantic
Result Allied victory
Longest continuous campaign of the Second World War, in which German U-boats and aircraft tried to cut the Allied sea routes across the Atlantic. Convoys, air cover, radar and broken German codes turned the campaign against the U-boats in 1943.
Allies
Axis
Battles 12
- Battle of the Caribbean 1941 – 1945 · Allied victory
-
Operation Rheinübung May 18–27, 1941
- Last battle of Bismarck May 26–27, 1941 · Allied victory
- Battle of the Denmark Strait May 24, 1941 · German victory
- Second Happy Time January 14 – August 31, 1942
- Channel Dash February 13, 1942 · German victory
- Operation Neuland March 1942 · Axis victory
- St Nazaire Raid March 28, 1942 · British victory
- Black May (World War II) April 29 – May 24, 1943 · British victory
- Battle of Sept-Îles October 22–23, 1943 · German victory
- Battle of the Bay of Biscay December 28, 1943 · British victory
- Operation Obviate October 29, 1944 · Inconclusive
- Operation Catechism November 12, 1944 · British victory