From the headquarters of the 77th Division in France, Alexander was one of the officers who reported on the Lost Battalion incident. A group of around 500 soldiers, in nine companies, had disappeared after going into the Argonne Forest expecting American and French Allied troops to meet them. This had followed an American attack on German forces and, with Major Charles White Whittlesey leading the group, the men found that the French troops had been stalled. As a result, the battalion was cut off by the Germans who surprised them and suffered large losses with only 197 men coming out of the ravine. In the report he states: