Mezue ahịrịokwu na-esonụ: N'ọnwa Julaị nke afọ 1861, ndị ọchịagha J. W. Bissell haziri otu ndị agha a maara dị ka Engineer Regiment of the West, nke a na-akpọkarị na steeti Illinois na Missouri, ma Henry Flad ghọrọ onye isi nke ụlọ ọrụ B. N'ọnwa Ọgọstụ nke afọ ahụ, General Frémont, onye na-achị St. Louis n'oge ahụ, depụtara ya maka ije ozi na owuwu nke mgbidi na Cape Girardeau, Missouri, ebe ọ nọrọ ọtụtụ ọnwa. Ka afọ ahụ gachara, mgbe General Halleck nọchiri Frémont, enyere Captain Flad iwu ka ọ sonyere General Pope na ndịda ọwụwa anyanwụ Missouri, wee jee ozi dị ka onye isi ndị ọrụ site na mkpọsa nke New Madrid na Point Pleasant na iweghara Island Number Ten, mgbe nke ahụ gasịrị ọ sonyeere ndị agha ya na New Madrid. Ya na ndị agha ya nọ na Fort Pillow na
Pittsburgh Landing na ọrụ ndị dị tupu Corinth. N'oge ọkọchị nke afọ 1862, ọ rụrụ ọrụ n'ịrụzi okporo ụzọ ụgbọ okporo ígwè Mobile na Ohio, n'ịrụ ụlọ ndị siri ike na Kọrịnt, na ịrụzi okporo ụzọ ụgbọ okporo ígwè Mississippi Central. O sokwa n'ọgụ Grant lụrụ na Grenada. Na February, 1863, e nyere ya iwu ka ọ gaa Young's Point, ebe e were ya n'ọrụ n'ọrụ injinịa, dịka ọ nọ na Baxter Bayou, Lake Providence, na Bayou Macon.