 CONT: Early in the movie, Lt. Rennick and his driver, Sgt. Griffin,  are driving in an open jeep to Rennicks new headquarters at the  convent. It is clearly winter with snow on the ground and leafless  trees. Yet, when they drive up to their headquarters gate, it now  looks like early summer, with trees with full leaves and no snow on  the ground. Then, its back to winter again with heavy snow when  Happy parachutes back into Germany.