Haha, I guess I can't say I know exactly what it is either, which is why I couldn't be specific about the art. The name of the idea/card was supposed to represent and boost close up fighters, the creatures in the front row. The idea sprang up in my mind because in most games, melee range fighters are supposed to be stronger than long range fighters. For example, in Pokemon, Close Combat is a decently powerful move.
I guess the name "Close Combat" doesn't really fit, but I do think the name implies what its effect would be. I'd gladly change the name though if it made the art any easier for you.