In Love and War

In Love and War is a 2011 South Korean romantic comedy-drama film starring Kim Joo-hyuk and Jung Ryeo-won. In June 1950, soon after the Korean War breaks out, a troop of North Korean soldiers enter a small South Korean village. The troop captain proclaims that they came to liberate the villagers but their true agenda is to ferret out the reactionaries. The villagers offer them heartfelt hospitality and cooperation to avoid falling out of the army's favor. Eventually genuinely strong and close friendship starts to build up between the soldiers and the villagers.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.