A firsthand Civil War memoir recounts enlistment and service with Illinois units from 1861 to 1865, following campaigns and engagements across river operations, marches, and major battles in the Western and Southern theaters. The narrative describes camp routine, skirmishes, a wartime capture, the hardships of long prisoner transports, and brutal confinement in pens such as Belle Isle and Libby, including illness and smallpox. It also relates escapes and recapture, return to duty, personal reminiscences from comrades, and reflective chapters on the consequences of secession and war, patriotic observances about the national flag, and advice to younger readers.