71: Into the Fire
War film from 2010 by John H Lee with Seung-Won Cha and Sang-Woo Kwone.
The North Korean troops plow through various places and cities in a pointless offensive against their neighbors in the south. Young men are forced completely unprepared into a war that in the course of 3 years must have taken millions of lives. This is the story of the Battle of Pohang, when a group of 71 students faced a historic fate.