FIPS, the title of Werner Fürbringer’s WWI memoirs, comes from the nickname Fürbringer earned while becoming one of Germany’s greatest U-boat aces (101 ships sunk). During the interbellum years, he was instrumental in rebuilding the German Navy. His memoirs came out during those years and have fascinated readers by both the intimate portrayal of the U-boat service and the picture of WWI submarine warfare.
It has ever been my opinion that Germans should take pride in their U-boat service. Their history in both WWI and WWII displays great gallantry in face of the enemy, and they carried out their duty aggressively despite appalling loss rate of 80% and 75% respectively. These memoirs show Germans adhering closely to prize warfare in the early days of the war (capturing merchantmen before sinking their ships) despite the many more dangers this poses to submarines than to surface warships. Even after unrestricted submarine warfare was declared, they generously helped their victims however they could.