 Nyorai kupfuurira kwendima iyi - Kusvikira muna 1917, United States yaichengeta uto duku bedzi, iro rakanga riri duku zvamazvirokwazvo kupfuura iro ramarudzi gumi namatatu akanga achishingaira muhondo. Pashure pokupfuura kweSelective Service Act muna 1917, yakanyorera varume vane mamiriyoni 4 basa rechiuto. Pakazosvika zhizha ra1918, varwi vokuUnited States vanenge mamiriyoni maviri vakanga vasvika muFrance, vanenge hafu yavo vakazopinda mubasa rokurwira hondo; Pakazosvika Armistice yaNovember 11, varwi vatsva vanenge 10 000 vakanga vava kusvika muFrance zuva nezuva. Muna 1917, Congress yakapa vagari vePuerto Rico vagari vemuUnited States pavakanyorwa kuti vapinde muHondo Yenyika I, sechikamu cheJones Act. Pakupedzisira, Germany yakaverenga zvisiri izvo pesvedzero yeUnited States pamigumisiro yekurwisana, ichidavira kuti kwaizova nemwedzi yakawanda zvikuru mauto eU.S. asati asvika uye kufungidzira kunyatsoshanda kweU-boats mukuderedza kuunganidza kweAmerica. Kutanga neHondo yeSaint-MihielMuna 1944, muhondo huru yokutanga yaibatanidza maAmerican Expeditionary Forces, vatungamiriri vehondo yeUnited States vaive General of the Armies John J. Pershing, Navy Admiral William Sims, uye Chief of Air Service Mason Patrick. 