The tank cannon had been in its travel position: turned to the rear and locked in place over the engine compartment.

At this signal, the tank cannon opened up.

The tank cannon fired the salute prescribed by regulations for a major general.

Its only known power is having seven tank cannons on each side of its body.

Since the fire from the tank cannon was invisible it was all the easier to see its effects.

Seconds later the tank cannon began to fire.

The bang of a tank cannon echoed off the cement walls today, and a young soldier jumped.

The big guns were the mecha's primary batteries, even more powerful than the tank cannon.

I was looking for a tall monk with silver hair and eyes like the business end of that tank cannon.

None of the tank cannons seems to be operational.