Finally you get to play the metal men with really huge shoulders! This is a really hefty book and it opens with one of the better descriptions of the game universe I've seen. However I lost interest very quickly and started skimming through to see how they had solved the problems with the military genre.
Although it is still early days it does seem that there are some interesting ideas by focussing on the preparation and execution of missions. Rather than finding your own way through the game you are telling a story through very defined and narrow windows into the world. This worked just fine for Dawn of War 2 (although the pacing was often off) but it is going to be important to see what the mechanics for the relationships and interactions between the PCs are.