Okay, here's the deal. You get to pick 3 war games from the AppStore and that's it. They have to be your absolute favorite. It may be hard to narrow the list down, but you have to do it. Include a link to the game on iTunes, just in case someone would like to check out your suggestion. For whatever reason, I always have problems trying to search for games on iTunes.

SuperPower - World at War
iTunes Link

This game is text-based game and it's very different from everything else that you'll find on the list. The other two games on my list are first person shooters, but I still consider them to be war games. Even though this game is vastly different and a lot of people consider text-based games to be a thing of the past, I still enjoy the hell out of this game.

I enjoy my shoot'em ups, but I also enjoy games that involve a lot of strategy and require you to think about your next move. This game is one of those games that you have to have a good strategy if you want to conquer the entire world. Also, it implements social networking capabilities, so that makes things very interesting.

Modern Combat 3: Fallen Nation
iTunes Link

This is a game that actually gets compared to the Call of Duty series a lot. If you are looking for a game that's close to playing a full-fledged FPS on a console, you're going to be really hard-pressed to find a better game than Modern Combat 3. This is one of the closest you can find if you're looking for that experience on a mobile phone or a tablet.

N.O.V.A. 3 - Near Orbit Vanguard Alliance
iTunes Link

Are you a fan of the Halo series? If so, this game gets compared to Halo a whole lot. It's an absolutely beautiful game and this is the third installment in the franchise. These games just keep getting better and better as they go. If another one is released in the future, you may see me edit this post and put it above Modern Combat 3.