Kammala jumla mai zuwa: An cire Smith daga 5th Marines kuma aka aika zuwa Kwalejin Janar Janar a Langres, daga inda ya kammala karatunsa a watan Fabrairun 1918. Shi ne na farko daga cikin 'yan bindiga shida da suka kammala wannan karatun. Daga nan sai aka nada shi Mataimakin Brigade na 4 na Marine, wanda ya kasance wani ɓangare na Rundunar Sojojin Amurka ta 2nd Infantry Division, wanda ke aiki a wani yanki mai zaman lafiya a kudu maso gabashin Verdun. A lokacin yakin da ke ciki da kewaye
Belleau Wood, ya taka rawar gani "mai mahimmanci duk da cewa ba shi da mahimmanci" a matsayin jami'in haɗin gwiwar brigade, yana lura da hanyoyin sadarwa na cikin gida a cikin brigade. An tura shi zuwa I Corps, Sojoji na Farko, a watan Yulin 1918, ya yi aiki a matsayin mataimakin jami'in gudanarwa wanda ke da alhakin sadarwa a lokacin Aisne-Marne, Oisne-Aisne Offensive, St. Mihiel da Meuse-Argonne offensives. A ranar 25 ga Nuwamba 1918 an daukaka Smith zuwa matsayi na wucin gadi na Manjo.