Originally a sergeant of the French 14th Company, in 1916 Alain Moreau moved up in rank when placed in charge of the 9th Belgian Infantry whose officers had all been killed at Flanders. As the French didn't want to 'waste' an officer on Belgian troops and a Belgian replacement was three weeks away, Moreau was promoted to lieutenant. He took his friend Sergeant Bernard Giscard as his first with Indiana Jones, who led the Belgians after Flanders, as his second.
During the Battle of the Somme, the 9th Belgian Infantry was given orders to take the German-held Chateau La Maisonette. Moreau's initial assault was driven back when the enemy deployed gas and flame-throwers but, after a two-day leave, the 9th managed to take La Maisonette. However, Moreau knew that the heavy losses they had suffered meant that the unit was not strong enough to hold the position and his request for reinforcements went unanswered. He was killed when German forces retaliated.