Wolfpacks U-603 was part of
U-603 operated with the following Wolfpacks during its career:
Ritter (14 Feb 1943 - 26 Feb 1943)
Burggraf (4 Mar 1943 - 5 Mar 1943)
Raubgraf (7 Mar 1943 - 20 Mar 1943)
Oder (17 May 1943 - 19 May 1943)
Mosel (19 May 1943 - 24 May 1943)
Trutz (1 Jun 1943 - 16 Jun 1943)
Trutz 2 (16 Jun 1943 - 29 Jun 1943)
Geier 1 (30 Jun 1943 - 14 Jul 1943)
Leuthen (15 Sep 1943 - 24 Sep 1943)
Rossbach (24 Sep 1943 - 9 Oct 1943)
Igel 2 (15 Feb 1944 - 17 Feb 1944)
Hai 1 (17 Feb 1944 - 22 Feb 1944)
Preussen (22 Feb 1944 - 1 Mar 1944)