1) It is the last surviving tank of the battalion.

2) It's commander is a maverick who doesn't play by the rules who has teamed up with the scientist who predicted the kaiju attack and was completely ignored.

3) The tank has been picked up by, or, in extreme cases, has actually crawled up onto the kaiju, it has one round left, and only seconds to traverse far enough to fire that round into the kaijus weak point.

... I like lists today, I guess.

More prosaically, while cramming a photon torpedo into something this small is probably usually a bad idea, I bet it would really surprise a larger tank or Destroid that just knew a Bonaparte couldn't possibly be packing anything that could cut through its armor.

-Merc
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