Scuttling of the French fleet at Toulon
The scuttling of the French fleet at Toulon was orchestrated by Vichy France on 27 November 1942 to prevent Nazi German forces from seizing it. After the Allied invasion of North Africa, the Germans invaded the territory administered by Vichy under the Armistice of 1940.
Source: Wikipedia — Scuttling of the French fleet at Toulon (CC BY-SA 4.0)