The mouseover description on the game's icon promised exactly what you gave us: An intense strategy game of dumb luck! So many reviews are complaining that it's totally random and up to luck, because you forgot to add that to the author comments, and people apparently don't read the game description before they click to play.
That said, I really enjoyed this game. It could use some sound, perhaps music and an alert noise when you earn a new soldier. My only question is, do the different soldier sprites have different abilities? For instance, do some sprites move faster or aim for the other color more often? Or are they just for style? Either way, it's a fun little game.