Buuxi weedha soo socota: 1861, isagoo 19 jir ah, Roberts wuxuu ku biiray shirkad C oo ka tirsan 19th Regiment North Carolina Infantry, oo markii dambe loo magacaabi lahaa 2nd Regiment NC Cavalry. Ka dib markii uu si sharaf leh ugu adeegay hawlgallada guutada ee Waqooyiga Carolina, laakiin aan lahayn tababar milatari oo rasmi ah, waxaa loo dallacsiiyay taliye labaad 30kii Ogosto, 1861. Bishii Sebtember 13, 1862, Roberts waxaa loo dalacsiiyay sarkaal sare. Guutada Roberts waxaa loo wareejiyay Virginia xilligii dayrta ee isla sanadkaas waxayna ka qeyb qaadatay dhowr dagaal, oo ay ka mid yihiin: Dagaalkii Fredericksburg, Dagaalkii Suffolk, iyo Dagaalkii Saldhigga Brandy. Bishii Nofeembar 13, 1863, Roberts waxaa loo dalacsiiyay kabtan ka dibna wuxuu noqday major ka hor guga 1864, markii uu ku dagaalamay guutada Waqooyiga Carolina ee qaybta William Henry Fitzhugh Lee. Waxaa loo dalacsiiyay kornayl bishii Juun 1864 iyo intii lagu jiray weerarkii Petersburg, waxaa la siiyay amarka Guutada 2aad ee NC Cavalry. Roberts wuxuu hogaaminayay weerar ka dhan ah ciidamada midowga, wuxuu ka degay, wuxuu qabsaday godadka qoryaha wuxuuna qabtay dhowr askari oo midowga ah
Dagaalkii Labaad ee Ream's Station bishii Ogosto 25, 1864. Bishii Febraayo 23, 1865, Roberts waxaa loo dalacsiiyay sarkaal guuto. Sida ku xusan dhaqanka, General Robert E. Lee wuxuu Roberts u soo bandhigay gacmo-gacmeedyada shaqsiyadeed ee Lee si loo aqoonsado adeegga cajiibka ah ee Roberts. Roberts wuxuu sii waday amarkii gudihiisa ee Dagaalkii Shanta Forks, ugu dambeyntiina wuxuu ku kacay Dagaalkii Appomattox Court House, Abriil 9, 1865.