03USMC
Active member
Where the Gun crews on Merchant ships Marines or Navy? I know they were Marines on the Capital ships (Carriers, Cruisers, Battleships), etc. But on Merchant ships I think they were Navy but I cannot remember.
Marines had "Marine Gun Mounts" one or two secondary (5 inch) turrets on Battleships and sometimes on cruisers. While most Marine Ships Detachments were trained on the ships guns the gun mounts were manned by Navy Gunners Mates except the designated Marine mounts.
Guns on armed Merchantmen were manned by Navy Armed Guards who were Navy Gunners Mates.