<prompt> Pedzisa mutsara unotevera: Pakutanga kweHondo yeVanhu, Mansfield akatungamira Dhipatimendi reWashington Kubvumbi 27 - Nyamavhuvhu 17, 1861, uye akasimudzirwa kuva brigadier general musi waMay 6, 1861. Mukuru-mukuru Winfield Scott akakurudzira Mansfield kuti ave mutungamiri wehondo yevazvipiri yakanga ichimutswa muWashington D.C. muchirimo ichocho, asi mutungamiri akaenda kuna Irvin McDowell panzvimbo pezvo. Mansfield haana kuonekwa sechisarudzo chakanakisisa pamusana pezera rake rakanga raenda mberi uye kusava nechokwadi nezvemauto okuzvipira uye kusundira kwehurumende kuti iende nokukurumidza kuRichmond iyo yaizogumisa hondo mumwedzi mishomanana, uye akanga asinawo mutsigiri wezvematongerwe enyika muWashington. Mushure mekukundwa kweUnion paBull Run, George McClellan akaiswa mukutungamira kwehondo muhondo yeEastern Theater uye tariro yaMansfield yekutungamira mauto yakaparadzwa zvakare. McClellan haanawo kumupa basa muuto rePotomac rakanga richangobva kuumbwa. Mansfield akanga akamira pa  <response>: Hatteras Inlet, North Carolina, muna October, zvichitevera hondo yakarwiwa ikoko naBenjamin Butler muna August. Akanga ari mutungamiri weboka muDhipatimendi reVirginia kubva munaKurume kusvika munaJune 1862. Basa rake roga rokurwa munguva iyi raiva kupfura mabhatiri emhenderekedzo yegungwa kubva kuHampton Roads kurwisa ironclad CSS Virginia muhondo yayo yegungwa kurwisa USS Monitor musi waMarch 9, 1862. Kusvikira pakupera kwa 1862, Mansfield akarayira Suffolk Division yeVII Corps yeDhipatimendi reVirginia munharaunda yeSuffolk. 