4th United States Artillery / Battery B

== Regimental History and Service Record ==
 
 
 In Brief
DESIGNATIONS
* Reached Washington, D.C., October, 1861
* Attached to McDowell's Division, Army of the Potomac, to March, 1862
* Artillery, 1st Division, 1st Army Corps, Army of the Potomac, to April, 1862
* Artillery, 3rd Division, Dept. of the Rappahannock, to June, 1862
* Artillery, 1st Division, 3rd Corps, Army of Virginia, to September, 1862
* Artillery, 1st Division, 1st Army Corps, Army of the Potomac, to May, 1863
* Artillery Brigade, 1st Army Corps, to March, 1864
* Artillery Brigade, 5th Army Corps, to May, 1865
* Dept. of Washington, D.C., to August, 1865
SERVICE
1861
* Duty in the Defenses of Washington, D.C., until March, 1862
1862
* Advance on Manassas, Va., March 10-15
* Advance on Falmouth, Va., April 9-19
* Duty at Falmouth and Fredericksburg until August
** Reconnaissance from Fredericksburg to Orange Court House July 24-27
** Battle of Cedar Mountain August 9
* Pope's Campaign in Northern Virginia August 16-September 2
** Battle of Groveton August 29
** (II) Battle of Bull Run August 30
* September 3-20, 1862 - The Maryland Campaign
** September 17, 1862 - Battle of Antietam, Maryland
* Movement to Falmouth, Va., October 30-November 19
* Battle of Fredericksburg December 12-15
* At Falmouth until April, 1863
1863
* April 27-May 6, 1863 - The Chancellorsville Campaign
** Operations at Pollock's Mill Crossing April 29-May 2
** May 1-5, 1863 - Battle of Chancellorsville, Virginia
* June 11-August 1, 1863 - The Gettysburg Campaign
** July 1-3, 1863 - Battle of Gettysburg, Pennsylvania
* Bristoe Campaign October 9-22
* Advance to line of the Rappahannock November 7-8
* Mine Run Campaign November 26-December 2
1864
* Demonstration on the Rapidan February 6-7, 1864
* May 4-June 12, 1864 - The Overland Campaign
** May 5-7, 1864 - Battle of the Wilderness, Virginia
** May 8-21, 1864 - Battles of Spotsylvania Court House, Virginia
** May 22-26, 1864 - Operations on Line of the North Anna River, Virginia
*** Battle of Jericho Ford May 25
** May 26-28, 1864 - Operations on Line of the Pamunkey River, Virginia
** May 28-31, 1864 - Operations on Line of the Totopotomoy River, Virginia
** June 1-12, 1864 - Battles of Cold Harbor, Virginia
*** June 1-3, 1864 - Battle of Bethesda Church, Virginia
* Siege of Petersburg June 16, 1864, to April 2, 1865
** Before Petersburg June 16-18
** Boydton Plank Road, Hatcher's Run, October 27-28, 1864
** Warren's Raid on Weldon Railroad December 7-12
1865
* Appomattox Campaign March 28-April 9, 1865
** Junction, Quaker and Boydton Roads March 29
** Lewis Farm, near Gravelly Run, March 29
** White Oak Road March 31
** Battle of Five Forks April 1
** Appomattox Court House April 9, surrender of Lee and his army
* Moved to Washington, D.C., May
* Grand Review May 23
* Duty in the Defenses of Washington, D.C., until August, 1865
 
 
 1861
 
 
 1862
 
 
 1863
 
 
 1864
 
 
 1865
 
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== Regimental Roster ==
* John W. Campton (2nd Wisconsin A)
* Charles Hanson (2nd Wisconsin A)
* Preston Johnson (2nd Wisconsin A)
* James H. Lewis (2nd Wisconsin A)
* Charles C. Jenks (2nd Wisconsin B)
* Henry I. Cardey (6th Wisconsin C)
== Regiment Statistical Information ==
Source 	Casualties 	Remarks
Dyer 	None listed	None
Fox 	None listed	
* Fox lists this unit as 1st on the list of units "sustaining greatest loss in action" (Regular Army Light Artillery Companies) but offers no specific numbers for these commands
WotRWiki Statistics	
* troops killed
** Includes troops mortally wounded
** Includes troops killed by disease
** All others are troops killed in action or under special circumstances	
== Legacy ==
== Notes ==
== Sources == 
* (Pages 761, 827, 828, 905, 916, 932, 933, 934, 938, 939, 940, 941, 1703)
* (Page 7)
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