機器
aggression
ammunition
army
battle
black
bombing
bullet
camouflage
conflict
courage
danger
dirt
exploding
fighting
forces
guard
gun
helmet
human
killing
marines
military
murderer
patriotism
person
power
protection
responsibility
rifle
security
shooting
silhouette
skirmish
sniper
soldier
special
sport
standing
strike
target
terrorism
uniform
violence
war
weapon