Fans of Bohemia Interactive's 2009 military shooter ARMA II now have reason to celebrate. Today the developer announced that the game's first expansion pack, ARMA II Operation Arrowhead, will be released world wide on June 29. Also the game is now being terms a stand alone expansion which likely means you won't need to purchase the original ARMA II to play the game.

Taking place three years after the campaign in ARMA II, Operation Arrowhead has a new campaign that takes place in three new world locations; a desert, a mountainous region and a dense city with surrounding countryside. Look for over 300 additional units, vehicles and weapons along with support for items like unmanned aerial vehicles.