US soldiers fighting in South Korea at Christmastime during Korean War

Shot from inside bunker of soldier firing machine gun / shot from top of hill of smoke rising from field below / shot from top of hill of smoke rising from field below, pan across to another cloud of smoke rising from field below / shot of tank on top of hill / WS tank firing / soldiers in space next to bunker preparing to fire mortar / four shots of soldiers decorating Christmas tree / tank, barely visible on slope, firing / shot from below of soldier on top of tank firing machine gun / shot from top of hill of smoke rising in field below / soldier on top of tank behind machine gun looking through binoculars / soldier on top of tank firing machine gun / soldiers in space next to bunker firing mortar / CU bells on door of bunker / Note: exact day not known