Pedzisa mutsara unotevera: Musi waChikunguru 1, 1863, Walker akasimudzirwa kuita brigadier general uye mushure meGettysburg mushandirapamwe akapihwa Major General Henry Heth's chikamu cheIII Corps yeArmy of Northern Virginia, pakutanga achiraira Heth's brigade yekare, ipapo Brigadier General James J. Archer's brigade futi, mushure mekukuvara kwakanyanya kwaArcher. Walker akashanda semutungamiri webrigade pasi peHeth kusvikira arasikirwa nerutsoka rwake rworuboshwe muHondo yeSpotsylvania Court House musi waMay 10, 1864. Akatora rutivi muHondo yeBristoe Station pana October 14, 1863, mu
Hondo yeMine Run uye, mushure mekushandira muShenandoah Valley munguva yechando ya1864 <unk> 1864, muHondo yeWilderness asati akuvadzwa paSpotsylvania Court House.