Terrific. I experimented with something very similar to this, in which an "army" of AA's were battling an "army" of AAA's and emerging victorious. But this is far better executed than my attempts (which I ultimately abandoned).
cute idea.. like the sombre colours.. I genuinely like the dof and the composition though the general public would probably (making guesses here)like to have more focus on the front battery and have it not cut off.