Mezue ahịrịokwu na-esonụ: Ọ laghachiri United States n'August 1917, ọnwa anọ ka ndị America banyesịrị n'Agha Ụwa Mbụ, ma jee ozi (nke ugbu a na ọkwa onyeisi ndị agha) na ndị agha nke 58 na Pennsylvania na North Carolina. Na Julaị 1918, e zigara ndị agha ya na Western Front ka ha jee ozi dị ka akụkụ nke American Expeditionary Force (AEF), nke General John J. Pershing, onye duziri Pancho Villa Expedition. Dịka onye isi ndị agha, o sonyere na ọrụ nchekwa Champagne-Marne, nke
Aisne-Marne Offensive, Agha nke Saint-Mihiel na Meuse-Argonne Offensive. Agha ahụ biri n'oge na-adịghị anya mgbe nke ahụ gasịrị, mgbe a bịanyesịrị aka n'akwụkwọ nkwekọrịta nkwekọrịta udo na Germany na November 11, 1918. N'ihi obi ike ya n'agha, e nyere ya Croix de guerre nke French.