The movie follows the events and hardships suffered by the nine companies, roughly 550 men, of the United States Army 77th Sustainment Brigade ("Statue of Liberty") that had been completely cut off and surrounded by German forces a short distance away in the Argonne Forest. The force was led by Maj. Charles W. Whittlesey, who was disparagingly described as a "New York lawyer" by his commanders. The battalion was part of what was supposed to be a three-pronged attack through the German lines. The battalion believed another American force was on its right flank and a French force on its left, not knowing that they had both retreated. The battalion lost contact with headquarters. Whittlesey sent several runners to headquarters, but none of them returned. He ended up having to rely on carrier pigeons to communicate. During the siege, American artillery began firing on the German position in the forest as the Americans cheered. However, the artillery began falling on the American line, killing numerous men in friendly fire. Whittlesey sends a Cher Ami to headquarters with a message saying they were being hit by their own artillery, saying, "For heaven's sake, stop it". The headquarters receives the message and stops firing. Witnessing the incident, the Germans attack the disoriented American force, but they are repelled by the Americans in fierce fighting and retreat back to their trenches.