The differences involve demilitarized zones, aircraft limits and naval weapons.
Moreover, at least in the American case, naval nuclear weapons can be fired without prior authorization.
A 5-inch gun can mean these naval weapons:
Until the 20th century, naval weapons had a short range, so camouflage was unimportant for ships, and for the men on board them.
Prior to about 1890, naval weapons were used only against surface shipping.
He was now part of what Terrell described as "private army" for Goodeve to develop naval weapons.
I saw a wide variety of naval weapons, old but in good working order.
Even so, it was a potent naval weapon.
He had offered his invention to the Government as a naval weapon, but at heart he was opposed to war.
Even so, the gun remained the principal naval weapon.