Breathtaking new photographs, including several vivid full-color images, offer a never-before-seen look at the war-weary soldiers in the Battle of the Bulge who fought through the frozen Ardennes Forest in a mountainous region of Belgium in the dead of winter.

They show soldiers on both sides battling the frigid weather as they fought each other during Nazi Germany’s last-ditch effort to drive back Allied forces between December 1944 and January 1945.

The pictures were released by Life Magazine on the 67th anniversary of the start of the grueling battle.