The German Königsberg-class light cruisers were some of the first “modern” ships of the Weimar-era Reichsmarine. These Versailles-compliant 7,000-ton warships replaced downright ancient Gazelle-class cruisers leftover from the 1900s, vessels that were obsolete even by Great War standards.
Lightly armed (9×6-inch C/25s) and lightly armored (2-inch belt), they fundamentally served as training ships for the nascent Kriegsmarine.
After waving the flag in the 1930s, two of the three Königsbergs were lost back-to-back in the invasion of Norway while the last member of the class, KMS Koln, managed to make it to 1945 before she was lost largely due to the fact that she spent most of WWII in the comparatively low-risk waters of the Baltic.
The two lost in Operation Weserübung were class leader, KMS Königsberg— badly damaged by Norwegian coastal artillery on 9 April and sunk by British bombers the following day at Bergen– and KMS Karlsruhe, who survived heavy fire from the Norwegian coastal guns at Odderøya only to be sent to the bottom on 9 April by the Royal Navy T-class submarine HMS Truant (N68).