Kammala jumla mai zuwa: A lokacin Yakin Spain da Amurka a 1898, Smedberg ya yi aiki a matsayin mai taimakawa ga Brigadier Janar Samuel Baldwin Marks Young, wanda ya umurci daya daga cikin brigades guda biyu da suka hada da rundunar sojan doki da Joseph Wheeler ya umurta. Ya shiga cikin yakin Las Guasimas da
Yaƙin San Juan Hill, kuma Leonard Wood ya yaba da shi a hukumance, kwamandan rundunar sojan doki na Amurka na 1 ("Rough Riders"), wanda ya kasance wani ɓangare na umurnin Young. Smedberg ya sami lambar yabo ta Citation Star don sanin jaruntakarsa a lokacin yaƙi. Lokacin da aka kirkiro Tauraruwar Azurfa a cikin 1932, an canza kayan adon Smedberg zuwa sabon lambar yabo.