It's a fun game. It reminds me a lot of the flash game "Age of War". I'm not sure that I completely understand the concept of giving your soldiers raises, and I think that part of the game could use more explanation somewhere that explains what happens as a result of that decision. Even without that mechanic, game still holds up pretty well.
Also, a couple of times each game all of my units would die all at once? I'm not sure if that's a mechanic that the other side has to prevent flooding with cheap units (some kind of weak aoe) or if it's a bug. If it's a mechanic, that's a great idea, but I think that it could use more signposting.
Overall, really liked the game, already spent around a half hour playing it and trying to find some degenerate strategies. I think the miners are really (too?) powerful, especially because the additional money they give persists between rounds. I managed to get so many miners that I could spam units as fast as I could click and still gain money at the end of the round.