I've read it. I wouldn't reccommend you reading it. The characters are too human... And in japanese style alot of people die, you don't want to, It's very graphic and emotional. That is in Muv luv alternative, there is none of that gloom in Muv luv extra and unlimited.
It'll likely wake up some stuff you'd rather stay in the past. I've never been to war, but I have lost a friend too early in life.. So I do understand some of your pain.
Anyway! There is other good vn's to read, so go read them