Z5 Paul Jacobi was a Type 1934A-class destroyer built for the Kriegsmarine in the mid-1930s. The ship was being refitted when World War II began on 1 September 1939 and was tasked to inspect neutral shipping for contraband goods in the Kattegat until early 1940. She participated in the early stages of the Norwegian Campaign by transporting troops to the Trondheim area in early April 1940 and was transferred to France later that year where she made several attacks on British shipping. Paul Jacobi spent most of 1941 under repair and returned to France in early 1942 to successfully escort two German battleships and a heavy cruiser home through the English Channel (the Channel Dash). The following month, the ship helped to escort another German battleship to northern Norway and returned in May