Rank and organization: Sergeant, U.S. Army, Company F, 364th Infantry, 91st Division. Place and date: Near Epinonville, France, September 26, 1918. Entered service at: Salinas, Calif. Birth: Caledonia, Mich. G.O. No.: 445, W.D., 1919.
<blockquote>Suffering from illness, Sgt. Seibert remained with his platoon and led his men with the highest courage and leadership under heavy shell and machinegun fire. With 2 other soldiers he charged a machinegun emplacement in advance of their company, he himself killing one of the enemy with a shotgun and capturing 2 others. In this encounter he was wounded, but he nevertheless continued in action, and when a withdrawal was ordered he returned with the last unit, assisting a wounded comrade. Later in the evening he volunteered and carried in wounded until he fainted from exhaustion.</blockquote>