The Battle of Algiers
http://en.m.wikipedia.org/wiki/The_Battle_of_Algiers
http://www.youtube.com/watch?v=7bOr_U_92xE
1960's French film(link is full film in French with English subtitles)on the 1950's colonial era Algerian insurgency and the urban guerrilla movement during the title battle.
Pretty gritty for a 45+ year old film.