Battle of the Atlantic
1939–1945 · Event
Six-year U-boat war for Atlantic supply lines; longest continuous campaign of WWII.
On these timelines: Master, World War II, United Kingdom (combined), 1940: Britain's Darkest Hour
Around 1939
- Berlin Airlift (1948)
- Manhattan Project (1942)
- Battle of Stalingrad (1942)
- Battle of Britain (1940)
- Indian independence and Partition (1947)
- Apartheid (1948)
- Spanish Civil War (1936)
- The Holocaust (1941)
- Hitler becomes Chancellor of Germany (1933)
- Great Depression (1929)