Mezue ahịrịokwu na-esonụ: Na 1860, Parnell rutere United States ma sonye n'usuu ndị agha U.S. na Brooklyn, New York mgbe Agha Obodo America malitere n'afọ na-esonụ. Ọ ghọrọ onye otu nke 4th Regiment New York Volunteer Cavalry, nke a maara nke ọma dị ka "Dickel's Mounted Rifles", na-eje ozi na ndị agha nke Potomac. N'ime afọ abụọ mbụ nke agha ahụ, ọ bụ akụkụ nke mkpọsa nke Colonel Louis Blenker na ndagwurugwu Shenandoah na West Virginia. Ọ hụkwara ọgụ na Cross Keys, Port Republic, Cedar Mountain, na Agha nke Abụọ nke Bull Run. Ya na ndị agha na-agba ịnyịnya, ọ lụkwara ọgụ na Fredericksburg, Beverly Ford, Brandy Station, Stoneman's Raid, Aldie, na Middleburg. Na 21 June 1863, e jidere ya mgbe o duchara ndị agha na-agba ịnyịnya na agha nke Upperville ma jide ya dị ka onye mkpọrọ agha. Ọ gbapụrụ ọnwa abụọ ka e mesịrị wee gawa Petersburg, West Virginia ebe ya na ndị agha ya nọ. O mechara lụọ agha na Wilderness, Spotsylvania, Trevilian Station, Petersburg, Lee's Mills,
Winchester na Cedar Creek n'etiti ihe ndị ọzọ.