Simultaneous with the release of demos, the game is being updated to version 1.02 with several new features, most importantly the ability to undo individual moves. 

To top it all off, Unity of Command will be on 20% discount until May 25th when purchased directly from developers. 

About the game: 

Unity of Command is an operational-level wargame that covers the entire 1942/43 Stalingrad Campaign on the Eastern Front. Playable from both the Axis and Soviet perspective, it strives to recreate the strategy, the forces involved and the general tension of that crucial period in World War II. 

What others are saying about Unity of Command? 

Accessible yet deep, attractive and with an AI which teaches you the core of the game by beating you around the head. 

Kieron Gillen, Rock Paper Shotgun 

A breath of fresh air, not only in wargaming but strategy gaming in general. 

Jon Shafer, Civ V Lead Designer, jonshaferondesign.com 

Unity of Command is the intro wargame that Panzer Corps should have been. 

Troy Goodfellow, Three Moves Ahead 

Wargames this fresh and friendly tend to inspire deep loyalty. 

Tim Stone, PC Gamer