Lexington I
• Year: 1861
• Location: Missouri
• Campaign: Operations to Control Missouri
• Begin Date: September 13, 1861
• End Date: September 13, 1861
Following the victory at Wilson's Creek, the Confederate Missouri State Guard, having consolidated forces in the northern and central part of the state, marched, under the command of Maj. Gen. Sterling Price, on Lexington. Col. James A. Mulligan commanded the entrenched Union garrison of about 3,500 men. Price's men first encountered Union skirmishers on September 13 south of town and pushed them back into the fortifications. Price, having bottled the Union troops up in Lexington, decided to await his ammunition wagons, other supplies, and reinforcements before assaulting the fortifications. By the 18th, Price was ready and ordered an assault. The Missouri State Guard moved forward amidst heavy Union artillery fire and pushed the enemy back into their inner works. On the 19th, the Rebels consolidated their positions, kept the Yankees under heavy artillery fire and prepared for the final attack. Early on the morning of the 20th, Price's men advanced behind mobile breastworks, made of hemp, close enough to take the Union works at the Anderson House in a final rush. Mulligan requested surrender terms after noon, and by 2:00 pm his men had vacated their works and stacked their arms. This Unionist stronghold had fallen, further bolstering southern sentiment and consolidating Confederate control in the Missouri Valley west of Arrow Rock.
Lexington II
• Year: 1864
• Location: Missouri
• Campaign: Price's Missouri Expedition
• Begin Date: October 19, 1864
• End Date: October 19, 1864
Maj. Gen. Sterling Price's march along the Missouri River was slow, providing the Yankees a chance to concentrate. Maj. Gen. William S. Rosecrans, commanding the Department of the Missouri, proposed a pincer movement to trap Price and his army, but he was unable to communicate with Maj. Gen. Samuel R. Curtis, commander of the Department of Kansas, to formalize the plan. Curtis was having problems because many of his troops were Kansas militia and they refused to enter Missouri, but a force of 2,000 men under the command of Maj. Gen. James G. Blunt did set out for Lexington. On October 19, Price's army approached Lexington, collided with Union scouts and pickets about 2:00 pm, drove them back, and engaged in a battle with the main force. The Yankees resisted at first, but Price's army eventually pushed them through the town to the western outskirts and pursued them along the Independence Road until night fall. Without Curtis's entire force, the Yankees could not stop Price's army, but they did further retard their slow march. Blunt gained valuable information about the size and disposition of Price's army.