Lyman Gibson Bennett enlisted in the 36th Illinois Infantry in 1861. Prior to the War he trained as a surveyor and civil engineer, working for the railroad. The military utilized Bennett’s skills as a cartographer, and assigned him to survey battlefields, road systems, and fortifications. Bennett’s diaries document his daily duties as both a soldier and an engineer for the military. His regiment participated in the Battle of Pea Ridge, which he describes in vivid detail. Bennett was discharged from the military in August 1864.

In 1865, Bennett joined the engineering department of General Samuel R. Curtis as a civilian. He mapped the 1864 battlefields of Sterling Price’s Missouri Expedition. Bennett was then assigned to survey fortifications in Nebraska and Colorado, and eventually served as an engineering officer on the Powder River Expedition of 1865. Bennett’s diaries provide colorful insight to his perception of the Ozarks and its inhabitants.

On August 17, 1861 Missouri Governor Hamilton R. Gamble ordered a proclamation establishing the Missouri State Militia for defense of the State against guerrilla activity. Gamble soon realized the need for additional troops, and on July 22, 1862 he issued General Order Number 29 organizing the Enrolled Missouri Militia (EMM). General Colley B. Holland assumed command of the 4th Military district, consisting of the counties in southwest Missouri, on October 30, 1862. Based in Springfield, Missouri, roughly 2,500 men reported for duty, operating under the jurisdiction of the State of Missouri. Holland’s documented all activities related to his command in the enrolled Missouri Militia order book for the 4th Military District in Southwest Missouri, from November 1862 through May 1863. His reports cover the Battles of Springfield and Hartville and also include details about depredation in Southwest Missouri and the extensive guerrilla activity that took place in the region.