Pedzisa mutsara unotevera: Rowley akashanda sacolonel we13th Pennsylvania Infantry kubva musi waApril 25, 1861, kusvika musi waAugust 6 wegore iroro. Akazova mukuru mukuru we102nd Pennsylvania Volunteer Infantry Regiment. Akakuvadzwa pa
Hondo yeSeven Pines, achitungamirira chikwata chake muuto rePotomac. Iye (kwenguva pfupi) akatungamira brigade muVI Corps paHondo yeFredericksburg. Akakwidziridzwa pachinzvimbo che brigadier general kusvika pachinzvimbo kubva munaNovember 29, 1862, Rowley akazotevera akatungamira brigade yeI Corps paHondo yeChancellorsville. Akanga achishanda semutungamiri we3rd Division, I Corps pakutanga kweHondo yeGettysburg, apo Maj. Gen. Abner Doubleday akanga achishanda semutungamiri weboka. (Chapman Biddle akatungamirira boka raRowley.) Musi waChikunguru 1, 1863, brigade yakatambura kurasikirwa kwakanyanya ichitarisana neConfederates kubva kuMajor General Harry Heth's division. Akakandirwa pasi pabhiza rake mukati mokudzokera shure apo rakamira zvishoma murukova. Arwara nechirwere chinokonzerwa nemamota akakura sezai rehuku ari mukati memakumbo ake, aiva nefivha, uye aiva nehasha. Kutevera kusangana pakati paRowley naBrig. Gen. Lysander Cutler pamusoro pemafambiro evamwe vevakuru ve7th Wisconsin, Cutler akaisa mhosva yekudhakwa muna Kubvumbi 1864. Akapiwa maawa asingasviki 24 kuti agadzirire kuzvidzivirira nokuda kwokutongwa, Rowley akatongerwa mhaka nedare rehondo iro munyori John F. Krumwiede anotaura kuti rakanga riri, "risina rusaruro uye richipfuurira kumutinhimira waro rimene". Kunyange zvazvo akadzorerwa nemurairo weMunyori weHondo Edwin M. Stanton uye Mutungamiri Abraham Lincoln, Rowley akapiwa chete mutungamiri wedunhu kumadokero kwePennsylvania, nekuda kwekurwisana kuri kuitika pakati pemutungamiri wehondo General George G. Meade uye iye zvino mutungamiri wehondo General Gouverneur K. Warren. Akavharirwa nezviito zvaGeneral Darius N. Couch mukuyedza kumisa 1864 kupinda kwePennsylvania neConfederate General Jubal Early, akasiya basa rake musi waZvita 29, 1864.