Please help me find the name of this military movie please?

I remember watching it a while back,i remember vaguely ,i don't think it was very popular, it was based on a true story and the us military, its about this unit that was stationed in iraq i think or Afghanistan , not sure, then they were attacked and the captain also was shot,they put him on the back of a van, also he went back for his men that were stuck in a building,but he got them out, also remember there was an operation scene or something and they were protecting the doctor while he was doing his work, they also made a friendly with an iraqi cop ,he helped them , and 1 part they lost all their ammo , so then they were being attacked and they just used their knives like out of a trench, please help whats the name of this dammit!