 She served with the 5th U-boat Flotilla – a training unit; the 9th flotilla from 1 September 1942 to 30 September 1944, the 8th flotilla, and finally with the 11th flotilla, all operational units, the latter from 1 March 1945 to 8 May.She was a member of seven wolfpacks.As one of the six German Type VIID submarines, "U-218" had a displacement of when at the surface and while submerged.