 Nguva pfupi apedza kudzidza, United States yakapinda muHondo Yenyika I. Muna June 1917 Bruce akabatana neUnited States Army somutevedzeri wechipiri muRwizi rweVashandi. Akashanda muFirst Officers Training Camp paLeon Springs, Texas. Apedza kurovedzwa kwake akatumirwa kunorwa muFrance sechikamu che5th Machine Gun Battalion ye2nd Infantry Division. Akaona chiito mumakomba eWestern Front muTroyon Sector pedyo neVerdun, muAisne Defensive operation pedyo neChateau Thierry, Aisne-Marne kurwisa paSoissons, kurwisana paSt. Mihiel, uye Meuse-Argonne Kurwisa paBlanc Mont. Kutevera kusainwa kweArmistice neGermany musi waNovember 11, 1918, akatamira nechikamu chake kuGermany kuti ave chikamu chesimba rekugara. Pazera duku zvikuru ramakore 24 Bruce akawana chinzvimbo chenguva pfupi chetezvara. Hurumende yeFrance yakamupa menduru yeLegion of Honor, menduru nhatu dzeCroix de Guerre, uye fourragère. 