If you want to identity a piece of military hardware just post a picture to Twitter calling it a "tank."

I'm seriously not joking. It's like that thing about giving wrong answers in a tech forum gets you the right answer from somebody else faster.

Other ways to make people angry enough to answer your question:

missile system = recoilless rifle

handgun = pistolgrip flashlight

rifle = M16

truck = deuce

fighter jet = MIG-<pick any number>

ship = minelayer