Nyorera kupfuurira kweiyi ndima - Mushure mekusimudzirwa kwake kukaputeni, Morrison akabatanazve ne20th Infantry Regiment, iyo yakaenda kuMobile, Alabama mukugadzirira kuendeswa kuCuba panguva yeHondo yeSpanish-American. Akashanda muCuba muhondo yose, kusanganisira Kurwiswa kweSantiago. Morrison akagamuchira Citation Star nokuda kwoushingi muhondo yeEl Caney
. Apo mubairo weSilver Star wakagadzirwa muna 1918, nyeredzi yaMorrison yakashandurwa kuita menduru itsva.