Price enters Missouri and Union response When it entered the state, Price's force was composed of about 13,000
cavalrymen. However, several thousand of these soldiers were poorly armed, and all fourteen of the army's cannons were small-caliber, which limited their effectiveness against fortifications. This Confederate army was divided into three
divisions, which were commanded by Major Generals
James F. Fagan and
John S. Marmaduke and Brigadier General
Joseph O. Shelby. Fagan's division was subdivided into four
brigades, Marmaduke's two, and Shelby's three. Shelby and Marmaduke's divisions were mostly Missouri troops, while most of Fagan's soldiers were from Arkansas. Fagan's division had a battery and a section of
artillery, Marmaduke's division had two batteries, and Shelby's division had a single battery. Price's best combat unit,
Shelby's Iron Brigade, was part of its former commander's division. Most of Price's units were understrength, some of the soldiers were unarmed, and others in the cavalry lacked mounts. Countering Price was the Union
Department of the Missouri, under the command of Major General
William S. Rosecrans, who had fewer than 10,000 soldiers on hand, many of whom were militiamen. Rosecrans had been relegated to the department earlier after being defeated at the
Battle of Chickamauga; many of the top Union military leaders had little confidence in him. In late September, the Confederates encountered a small Union force holding
Fort Davidson near the town of
Pilot Knob. Attacks against the post in the
Battle of Pilot Knob on September 27 failed, but the Union garrison abandoned the fort that night. Price had suffered hundreds of casualties in the battle, and decided to divert the aim of his advance from
St. Louis to Jefferson City. Price's army was accompanied by a sizable
wagon train, which significantly slowed its movement. The delays caused by this slow progress enabled Union forces to reinforce Jefferson City, whose garrison was increased from 1,000 to 7,000 between October 1 and October 6. In turn, Price determined Jefferson City was too strong to attack, and began moving westward along the course of the
Missouri River. The Confederates entered the
Boonslick region, where Confederate sympathy was strongest in Missouri. Price's troops were welcomed by the population, but still engaged in some plundering. During the earlier parts of the campaign, most recruitment to Price's army had been through involuntary
conscription, but in the Boonslick, voluntary recruiting was more successful. At least 2,500 volunteers joined Price's army in the region, although this was offset to some degree by veteran soldiers allowed to take
furlough being unable to rejoin their units as the campaign situation changed. Historian Howard N. Monnett describes the recruits Price received at
Boonville as "farm boys, unarmed and ill-prepared". During this time,
a side raid against the town of Glasgow on October 15 was successful, as was
another raid against Sedalia. As Price's army moved west from Jefferson City, it was harassed by Union troops. On October 6, Major General
Alfred Pleasonton arrived at St. Louis after Rosecrans recalled him from leave. Pleasonton reached Jefferson City two days later and then organized a cavalry division consisting of four brigades, which were commanded by Brigadier Generals
Egbert B. Brown,
John McNeil,
John B. Sanborn, and Colonel
Edward F. Winslow. Pleasonton sent Sanborn and his brigade after the Confederates with instructions to "harass and delay [Price] as much as possible until other troops could be brought forward". An infantry division commanded by Major General
A. J. Smith was diverted to St. Louis; Rosecrans sent these 4,500 veteran infantry in pursuit of Price, but they never saw action during the campaign. To the west, the
Department of Kansas was commanded by Major General
Samuel R. Curtis. Curtis had roughly 7,000 troops in his department, but they were spread over a wide area protecting isolated settlements on the
western frontier from raids by Native American tribes. Major General
James G. Blunt and some of the department's troops were withdrawn from their role in fights against the
Cheyenne. Along with some troops already stationed along the Missouri-Kansas border, this amounted to about 4,000 troops. Curtis considered it necessary to call up the
Kansas State Militia to provide more manpower and informed
Governor of Kansas Thomas Carney on September 17 the situation might warrant the mobilization of the militia. The call-up was delayed by Kansas politics. Carney and his followers were opposed by
United States Senator James H. Lane's faction of the Kansas
Republican Party. Carney suspected the militia call-up was a ploy by Curtis to influence the outcome of the
1864 Kansas gubernatorial election by preventing voters who supported Carney's faction from being present at the polls on election day. Carney had resisted an October 5 call from Curtis to mobilize the militia, and did not order the mobilization until he
telegraphed Rosecrans on October 9, who confirmed Price's force did indeed pose a threat to Kansas. The Kansas militiamen were placed under the command of Major General
George Deitzler, who had previous combat experience at Wilson's Creek and in the
Vicksburg campaign; these militiamen made up the bulk of Curtis's command.
To Lexington commanded the Confederate troops who took part in his
1864 Missouri Expedition On October 14, Curtis named his command the
Army of the Border and organized it into two divisions: the First Division under Blunt and the Second Division under Deitzler. Blunt's division was a mixed force of militia and army soldiers, while Deitzler's force was composed entirely of militiamen. Of Curtis's roughly 16,000 to 18,000 troops, all but 4,000 were militia. Blunt had his troops at
Hickman Mills, Missouri, that same day. He organized his division into three brigades there. Blunt's first brigade, under the command of Colonel
Charles R. Jennison, was composed of the
15th Kansas Cavalry Regiment and part of the
3rd Wisconsin Cavalry Regiment. The second brigade was commanded by Colonel
Thomas Moonlight and consisted of the
11th Kansas Cavalry Regiment and parts of the
5th Kansas Cavalry Regiment and the
16th Kansas Cavalry Regiment. Moonlight was a political
partisan for Lane, while Jennison was a former backer of Lane who had since switched to the Carney fold, while Blunt himself was a Lane supporter. The third brigade's commander, Colonel
Charles W. Blair, was less politically involved than the other two, and his brigade contained part of the
14th Kansas Cavalry Regiment and three militia units (the
3rd,
6th, and
10th Kansas State Militia). Each brigade was assigned an artillery battery, Blair's brigade getting an extra artillery section; this amounted to four guns each for Jennison and Moonlight and eight for Blair, two of which were from a militia unit. Having some of the militia under Blunt's command caused further political issues in the form of militia Brigadier General Charles W. Fishback, who resented being subordinate to a colonel. Fishback, under his own initiative, ordered one of the militia regiments assigned to Blair back to Kansas, an order which was countermanded by Blunt, who had Fishback arrested. Even after the militia had been called out, political issues between Carney and Blunt continued. Sanborn and Pleasonton had not kept in continuous contact with Price, and the telegraph link between Curtis and the Union troops on the other side of Price's force had been broken. Lacking good reports of Price's location, doubts grew in the mind of Carney and other influential Kansans that Price's force was actually a threat to Kansas. Fears remained that Curtis was interfering with the upcoming election or that northeastern Kansas had been left exposed to pro-Confederate Missouri guerrillas. The
2nd Colorado Cavalry Regiment and the 16th Kansas Cavalry Regiment, which were part of the pre-campaign garrison along the Missouri-Kansas border, were under the command of the 2nd Colorado's Colonel
James H. Ford, at
Independence, Missouri, east of
Kansas City. Ford sent parts of the two regiments to scout from Independence to
Lexington, Missouri, under the command of Major J. Nelson Smith, who was an officer of the 2nd Colorado. Sending troops on a scout east of the
Little Blue River, Smith received several reports regarding Price's movements. At Lexington, to the east of Independence, the small Missouri State Militia garrison abandoned the town; by October 14, it had been occupied by pro-Confederate guerrillas. Late on October 16, Curtis decided to send Blunt's division less Blair's brigade in the direction of
Warrensburg to scout for Confederate troops; if the area was clear of opposing forces he had the option to move north to Lexington. Blunt probed south and east from Hickman Mills to
Pleasant Hill late that day, having sent Blair's brigade to Kansas City to be equipped. This detachment left Blunt with roughly 2,000 men and eight
12-pounder mountain howitzers. in civilian attire. Blunt commanded the Union troops during the battle at Lexington. Finding no enemy troops at Pleasant Hill, Blunt decided to advance, moving his troops to
Holden. By 5:00 p.m. on October 17, Blunt had received information Price and Shelby were at
Waverly, which was east of Lexington. Sanborn was reported to be at
Dunksburg, with A. J. Smith's troops further behind. Blunt requested Curtis send the 2nd Colorado Cavalry and the portion of the 16th Kansas Cavalry that were at Independence east to Lexington; after the battle of Lexington the two regiments formed the core of a new brigade added to Blunt's command. Requesting support from Curtis and Sanborn, Blunt moved his troops after dark on October 17 to Lexington. Senator Lane accompanied Blunt as a member of his staff. Blunt hoped to catch Price's army between his force, Smith's and Pleasonton's, and the Missouri River. Also on October 17, Major Smith of the 2nd Colorado and Major James Kentner of the 16th Kansas Cavalry scouted with roughly 300 troops from Independence to Lexington, but with insufficient supplies, returned to Independence, although these troops were sent back towards Lexington soon after having returned to Independence as part of Blunt's concentration of force at Lexington. Moonlight's troops reached Lexington the next morning and drove out some pro-Confederate guerrillas; the rest of Blunt's force reached the town later that day. Lexington was not a readily defensible position. What little high ground there was at the town was along the Missouri River, near the
Masonic College site, where Price had defeated a Union force in the 1861
Siege of Lexington. The terrain was open and did not contain any
natural bottlenecks, and roads ran into Lexington from multiple directions. Blunt positioned Moonlight's brigade at the Masonic College, while Jennison's troops were deployed at a fairgrounds several miles south. Blunt was suffering from sleep deprivation and made few preparations for a defense before the late evening of October 18. After dark, Blunt sent two companies commanded by Captain Louis Green south of Lexington to picket the Warrensburg road, while a force of roughly
battalion size commanded by Captain H. E. Palmer drawn from the 2nd Colorado and the 11th Kansas Cavalry was deployed three miles east of Lexington, guarding the approach from
Dover. The Confederate troops who had raided Glasgow and Sedalia had returned to Price's main body at Waverly, and Price had mostly regathered his army by late on October 17. The Confederate army had been recruiting as it passed through the Boonslick. On October 18, Price was informed by a spy that sizable Union forces from Jefferson City and St. Louis were pursuing from the east, and that at least 3,000 Union troops had occupied Lexington. Concerned he could not supply or protect any further soldiers, Price ceased recruiting and moved his roughly 17,000 troops west to Lexington early on October 19, with a plan of advance designed to capture Blunt's whole force at Lexington. With Shelby's troops in the lead, Price's army struck Lexington in three prongs. Shelby's troops were ordered to swing around Lexington to the south and strike the road to Independence west of the town; this force would be split into two different groups during the battle, each approached Lexington along different routes. The Confederates also approached Lexington from the east along the Dover road. ==Battle==