World War II: Neuengamme concentration camp near Hamburg is liberated by the British Army.

Neuengamme was a network of Nazi concentration camps in northern Germany that consisted of the main camp, Neuengamme, and more than 85 satellite camps. Established in 1938 near the village of Neuengamme in the Bergedorf district of Hamburg, the Neuengamme camp became the largest concentration camp in Northwest Germany. Over 100,000 prisoners came through Neuengamme and its subcamps, 24 of which were for women. The verified death toll is 42,900: 14,000 in the main camp, 12,800 in the subcamps, and 16,100 in the death marches and bombings during the final weeks of World War II. Following Germany's defeat in 1945, the British Army used the site as an internment camp for SS and other Nazi officials. In 1948, the British transferred the land to the Free Hanseatic City of Hamburg, which summarily demolished the camp's wooden barracks and built in its stead a prison cell block, converting the former concentration camp site into two state prisons operated by the Hamburg authorities from 1950 to 2004. Following protests by various groups of survivors and allies, the site now serves as a memorial. It is situated 15 km southeast of the centre of Hamburg.

Hamburg, officially the Free and Hanseatic City of Hamburg, is the second-largest city in Germany after Berlin and 7th-largest in the European Union with a population of over 1.9 million. The Hamburg Metropolitan Region has a population of over 5.1 million and is the eighth-largest metropolitan region by GDP in the European Union.

The British Army is the principal land warfare force of the United Kingdom. As of 1 January 2025, the British Army comprises 73,847 regular full-time personnel, 4,127 Gurkhas, 25,742 volunteer reserve personnel and 4,697 "other personnel", for a total of 108,413.