Uncivilized
Cowardly.
The connection between German submarine warfare & the battle of Stalingrad is a distant one............Ans 2 - The Battle of Stalingrad was fought between the Russian and German Armies and air forces. Submarine warfare was not a part of it.
Germany practiced unrestricted submarine warfare.
"Guerre de Course"; Commerce Raiding.
Guerre de Course (Merchant Warfare).
Principally the Imperial German Navy and the Royal Navy - both enormous forces at the time. Submarines and anti-submarine warfare were still in their infancy in WW1, but it was a German submarine that torpedoed the liner Lusitania off the coast of Ireland.
German submarine warfare
submarine warfare
In almost all navies during WWII, submarines were called "boats"...not ships. In Germany, a sub was called an "under-sea-boat", with German enthusiasts preferring to use the German spelling/pronunciation of "boot" for boat. Bottom line: "U-Boat submarine warfare..." is simply submarine warfare (Sub Warfare is what most boys in America grew up calling it).
He thought that Germany was a powerful country. But ever since the unrestricted submarine warfare they have wanted to bring in other allies. Brought to the alliance system.
The Sussex Pledge
unrestricted submarine warfare