Marine Guns are often named after animals, or the person who invented or developed them. The code letters are used as part of the series in which they were developed.
There are tons of names for large guns. Machine guns...Bazookas....
Manufacture names of BB guns: Gamo, Crosman, Umarex, Daisy and others To see the names used on BB guns See the link below
Talon
There were no US Marines on the BEACHES at Normandy. There were marine snipers on the highest points on the ships firing at badly placed mines and MG nests along the beach. There were marines operating the main guns on the ships.
Marine scientists.
Demi-culverin
two of the names of the climates are: Tropical Marine Climate and Temperate Climate
Marine animals with soft bodies and no backbone are Mollusks.
A cannon or howitzer are names for large guns.
Axel rose and Tracii guns last names, even though slash replaced tracii
The Walther firearms are real and given their correct names; all others are based on real weapons but given other names (e.g. guns based on the Steyr Aug and the AKS-74U are renamed the FRWL and A3 Raker).
They used arisaka rifles and many types off lmgs and heavy machine guns. Their names can't remember all their exact names. Mortars and possibly few dug in light tanks and field guns. What guns they used didn't make battle brutal it was the way the Japanese fought it