epa10655238 Royal Navy destroyer HMS Defender (L) and French Navy frigate FS Bretagne D-655 (R) berthed in Liverpool ahead of a weekend of commemorative events for the 80th anniversary of the Battle of Atlantic in Liverpool, Britain, 26 May 2023. The Battle of the Atlantic was fought for control of Atlantic shipping routes and was the longest running battle of World War II, lasting from September 1939 to May 1945. EPA-EFE/ADAM VAUGHAN