Obergruppenführer Shosshund (properly pronounced as "Shoss-hoond") was the commander of the SS Tirpitz. He took the first Thule Medallion under orders from Berlin. B.J. Blazkowicz punched him and took his uniform, and infiltrated his office where he found the medallion.
His name is German for 'lap dog.'
His name appears a few times in the game in two bits of Intel. In both cases, the name is mispronounced.