Georgia had a naval militia. They even have a nice little plaque on the side of the road down on Saint Simon's Island.
You could get .50 cals post WWII as well. I'm sure someone, especially with the amount of USAAF armores mustered out of the war could have made that work.
NRA Life Member
Me: "The .45 GAP was an answer to the question nobody asked."
Trooper pal: "Says the guy who thinks .38 Super and 10mm are viable pistol calibers and gets mad when Wal-Mart doesn't have them."