The following Union Army units and commanders fought in the Battle of Westport of the American Civil War. The Confederate order of battle is listed separately.
By order of MG Blunt (General Field Orders No. 2) the militia regiments of William H. M. Fishbeck, Brigadier General of Militia, were placed under the command of Charles W. Blair, Colonel of Volunteers; Fishbeck was infuriated that his command had been subordinated to a volunteer officer. Because Kansas law stated that militia should be kept under the command of militia officers, Fishbeck disregarded Blunt's order. Blunt had Fishbeck arrested and held until released by order of MG Curtis. Upon his release, Fishbeck resumed command of the Kansas Militia regiments, with orders to obey directives that came from MG Blunt. This rather cumbersome arrangement had BG Fishbeck in direct command of the militia units attached to the 3rd Brigade, 1st Division, and Col Charles Blair in overall command of the brigade. Howard N. Monnett describes the arrangement as a "brigade within a brigade". Blair and Fishbeck led the militia into action at Westport (accompanied onto the field by MG George W. Dietzler), and then in the subsequent pursuit of Price until MG Curtis ordered the militia to return home.[1]
See main article: Army of the Border. MG Samuel R. Curtis
Escort:
| width=25% | Division | width=25% | Brigade | Regiments and others |
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| Provisional Cavalry Division MG James G. Blunt | 1st Brigade Col Charles R. Jennison |
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| 2nd Brigade Col Thomas Moonlight |
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| 3rd Brigade Col Charles W. Blair |
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| 4th Brigade Col James Hobart Ford |
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| Kansas State Militia Division[2] [3] [4] MG George W. Deitzler, Kansas State Adjutant General | Brigade field commanders BG Melvin S. Grant[5] BG William H. M. Fishback[6] | (not brigaded)
Artillery
Unattached unit
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| width=25% | Division | width=25% | Brigade | Regiments and others |
|---|---|---|---|---|
| Provisional Cavalry Division MG Alfred Pleasonton | 1st Brigade BG Egbert B. Brown (arrested Oct. 23) Col John F. Philips |
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| 2nd Brigade BG John McNeil |
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| 3rd Brigade BG John B. Sanborn |
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| 4th Brigade Col Edward F. Winslow (w Oct. 23) Ltc Frederick W. Benteen |
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| Artillery Col Nelson D. Cole |
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| Unassigned |
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See main article: XVI Corps (Union Army). (detachment of First and Third Divisions; in pursuit, not present at the battle)
MG Andrew Jackson Smith
| width=25% | Division | width=25% | Brigade | Regiments and others |
|---|---|---|---|---|
| First Division Col Joseph J. Woods | 2nd BrigadeCol Lucius Frederick Hubbard |
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| 3rd BrigadeCol Sylvester G. Hill | ||||
| Third Division Col David Moore | 1st BrigadeCol Thomas J. Kinney | |||
| 2nd BrigadeCol James Isham Gilbert | ||||
| 3rd BrigadeCol Edward H. Wolfe | ||||