(Washington) Louisiana Artillery Battalion / Battery B

== Regimental History and Service Record ==
* Also referred to as:
** (Richardson's) Louisiana Artillery Battery
** (Rosser's) Louisiana Artillery Battery
* January 1861 - Organized at New Orleans 
* May 26, 1861 - Mustered into Confederate States service in Lafayette Square, New Orleans
* July 18, 1861 - Blackburn's Ford
* July 21, 1861 - Battle of Bull Run, Virginia
** Armed with four 12-lb. Howitzers
* September 11, 1861 - Lewinsville [section]
* April-May 1862 - Siege of Yorktown
* May 23-24, 1862 - Skirmishes at Ellison's Mill and Mechanicsville
* May 24, 1862 - Skirmish at New Bridge
* June 25-July 1, 1862 - Seven Days Battles
** June 26, 1862 - Mechanicsville
** June 27, 1862 - Gaines' Mill
** June 29, 1862 - Savage's Station
** June 30, 1862 - Frayser's Farm
** July 1, 1862 - Malvern Hill
* August/September 1862 - Armed with two 12-lb. Howitzers and two 12-lb. Napoleons
* August 28-30, 1862 - Battle of Bull Run, Virginia
* September 1, 1862 - Chantilly
* September 14, 1862 - South Mountain
* September 17, 1862 - Battle of Antietam, Maryland
* December 13, 1862 - Fredericksburg
** Armed with four 12-lb. Napoleons
* May 1-4, 1863 - Chancellorsville
* July 1-3, 1863 - Battle of Gettysburg, Pennsylvania
** Armed with one 12-lb. Howitzer and two 12-lb. Napoleons
* July 5, 1863 - Waynesboro
* July 6, 1863 - Williamsport
* January-February 1864 - New Bern Campaign [detachment]
* May 10, 1864 - Chester Station
* May 16, 1864 - Drewry's Bluff
* May 16, 1864 - Port Walthall Junction
* June 1-3, 1864 - Cold Harbor
* December 28, 1864 - Armed with four 12-lb. Napoleons
* June 1864-April 1865 - Siege of Petersburg
** April 2, 1865 - Final Assault on Petersburg
* March-April 1865 - The Appomattox Campaign
** April 8, 1865 - Captured as part of Walker's Artillery Column
DESIGNATIONS
* July 1861 - Army of the Potomac / Early's Brigade
* July 1861 - Army of the Potomac / 1st Corps / Early's Brigade
* August-October 1861 - Army of the Potomac / 1st Corps / Reserve Artillery / Washington Artillery Battalion
* October 1861-February 1862 - Department of Northern Virginia / Potomac District / Reserve Artillery / Washington Artillery Battalion
* February-March 1862 - Department of Northern Virginia / Potomac District / Washington Artillery Battalion
* March-May 1862 - Department of Northern Virginia / Reserve Artillery / Washington Artillery Battalion
* June 1862 - Army of Northern Virginia / Longstreet's Division / Washington Artillery Battalion
* June-July 1862 - Army of Northern Virginia / 1st Corps / Longstreet's Division / Washington Artillery Battalion
* August 1862-July 1863 - Army of Northern Virginia / 1st Corps / Artillery Reserve / Washington Artillery Battalion
* July-September 1863 - Army of Northern Virginia / 1st Corps / Artillery / Washington Artillery Battalion
* September 1863 - Department of North Carolina / Washington Artillery Battalion
* December 1863-May 1864 - Department of North Carolina / Walton's Artillery Command / Washington Artillery Battalion
* May 1864 - Department of North Carolina / Hoke's Division / Washington Artillery Battalion
* May 1864 - Department of North Carolina and Southern Virginia / Hoke's Division / Washington Artillery Battalion
* June 1864-April 1865 - Army of Northern Virginia / 3rd Corps / Artillery / Washington Artillery Battalion
== Regimental Roster ==
* First Commander: Thomas L. Rosser (Captain)
* John B. Richardson (Captain)
== Regiment Statistical Information ==
== Legacy ==
== Notes ==
== Sources == 
* Bartlett, Napier, Soldier's Story of the War
* Owen, William Miller, Camp and Battle with the Washington Artillery of New Orleans
* (Pages 32, 33, 36-37)
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