World War II Timeline: April 1940
A dated guide to 6 documented events in April 1940, with links to individual historical records.
Dated historical records
Entries below follow the dates recorded in the WWII CHRONOS archive. Each linked title opens the original historical entry, including its source reference.
- — Invasion of Denmark and Norway — Germany begins an operation to occupy two Scandinavian states.
- — First Naval Battle of Narvik — British destroyers attacked German ships in Narvik harbour.
- — Second Naval Battle of Narvik — A British force again attacked German destroyers in the Norwegian fjords.
- — Allied Landing at Namsos — British and French forces began landing in central Norway.
- — Allied Withdrawal from Central Norway — British command begins withdrawing troops from the Trondheim area.
- — Sealing of the Łódź Ghetto — The German administration isolated the city's Jewish population.
For wider context, explore the interactive historical timeline and compare events across theaters.