Here are two Kriegsmarine units from WWII. One wears the standard Kriegsmarine Blue uniform. The other is equiped with a life jacket and a Navy Blue steel helmet. Both units can be used as a German UU to replace the marine unit.
Seaman with rifle-uses infantry animations
Seaman with MP40-uses marine animations
Kriegsmarine (German Marine) 2016-10-05
Kriegsmarine (German Marine)