Panzer Tactics DS review at IGN.

"War makes for a great multiplayer experience. There's something about slaughtering an entire army that becomes exponentially more satisfying when you can lean over and laugh at your friend that was commanding. Plus, let's face it, World War II is so played out that the novelty of playing historic battles and learning about them has long since passed. So it's a little funny to see that 10tacle Studios' Panzer Tactics DS has a really strong and interesting single player, while simultaneously botching the multiplayer so bad it should be a war crime."

Full Source: IGN