機器
ammunition
armament
armed
arms
army
artillery
artillery gun
battery
battle
battlefield
caliber
cannon
combat
conflict
danger
defending
defense
equipment
fight
fighting
fire
firearm
force
fort
green
gun
heavy
historic
historical
history
iron
metal
military
monument
museum
old
power
protect
retro
shot
steel
vintage
war
weapon
world war ii
ww2