Kammala jumla mai zuwa: Tarihin Arkansas National Guard da yakin duniya na farko ya fara ne tare da sake fasalin Arkansas State Guard bayan yakin Spain-American. Sakamakon matsalolin da aka fuskanta yayin tattara dakarun 'yan bindigar jihar, Majalisar Dokokin Amurka ta zartar da sabuwar doka wacce ta haifar da sauya sunan Arkansas State Guard zuwa Arkansas National Guard. Sabuwar dokar tarayya ta haifar da ƙarin kuɗi da horo ga masu gadin. Shugaban kasar ya kira sabon garkuwar Arkansas National Guard don taimakawa wajen kare kan iyaka da Mexico a shekarar 1916 don mayar da martani ga hare-haren kan iyaka a lokacin juyin juya halin Mexico. Rundunar tsaron kasa ta Arkansas ta dawo ne daga
Ba da daɗewa ba, sojojin Amurka sun shiga cikin rundunar sojan Amurka ta Mexico a 1917 lokacin da aka kunna shi don Yaƙin Duniya na I. A matsayin wani ɓangare na haɗarsu a cikin Sojojin Amurka, an sake yin amfani da dukkanin rundunonin Tsaro na Ƙasar bisa ga tsarin tarayya. An haɗa rukunin Arkansas National Guard a cikin Rundunar Sojoji ta 39 kuma bayan horo a sansanin Beauregard, an tura su zuwa Faransa a watan Agusta da Satumba na 1918. An raba rukunin na 39, tare da amfani da wasu raka'a a matsayin maye gurbin sauran rukunin. Yawancin tsoffin Arkansas National Guardsmen sun koma Amurka a watan Fabrairun zuwa Yuni 1919 kuma an sake su.