Rossbach was a wolfpack of German U-boats that operated during the battle of the Atlantic in World War II.
Rossbach was formed in October 1943 to operate against the North Atlantic convoy routes and comprised 21 boats.
Whilst forming, several boats from Rossbach were detected and attacked by air patrols; 4 were sunk (U-221, U-279, U-389,and U-336) and another 4 were damaged (U-260, U-305, U-666 and U-731), forcing them to return to base.
They sank one ship of 5,612 gross register tons (GRT) and one warship but lost 3 boats (U-419, U-610 and U-643) in the engagement.
Rossbach was disbanded following this attack; the remaining boats formed the core of a new group, codenamed Schlieffen.