| Big Sandy Expedition | |||||||
|---|---|---|---|---|---|---|---|
 | |||||||
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| Belligerents | |||||||
 United States (Union) |
 CSA (Confederacy) | ||||||
| Commanders and leaders | |||||||
|
B.G.William "Bull" Nelson Col. Joshua W. Sill | Col. John S. Williams | ||||||
| Units involved | |||||||
|
16th Regiment Kentucky Volunteer Infantry 2nd Ohio Infantry 21st Ohio Infantry 33rd Ohio Infantry 59th Ohio Infantry Battery D, 1st Ohio Light Artillery 1st Ohio Cavalry (B Company) | 5th Kentucky Infantry | ||||||
| Strength | |||||||
| 5,500 (twelve units of Kentucky and Ohio infantry) | 1,010 (nine companies of infantry and five mounted) | ||||||
| Casualties and losses | |||||||
|
Killed: 6 Wounded: 26 |
Killed: 31 Wounded: 55 Captured: 74 | ||||||
The Big Sandy Expedition was an early campaign of the American Civil War in Kentucky that began in mid-September 1861 when Union Brig. Gen. William "Bull" Nelson received orders to organize a new brigade at Maysville, Kentucky and conduct an expedition into the Big Sandy Valley region of Eastern Kentucky and stop the build-up of Confederate forces under Col. John S. Williams. This was done in three phases. From September 21 to October 20, 1861, Nelson assembled a brigade of 5,500 Union volunteers from Ohio and Kentucky. On October 23, the southern prong secured Hazel Green and the northern prong West Liberty. The two prongs were consolidated at Salyersville (Licking Station) and they began the final phase on October 31. This led to the Battle of Ivy Mountain on November 8 and the withdrawal of Confederate forces from Pikeville (Piketon) on November 9, 1861.