9th Massachusetts Infantry

== Regimental History and Service Record ==
Organized at Boston June 11, 1861. Left State for Washington, D.C., June 27. Attached to Sherman's Brigade, Division of the Potomac, to October, 1861. Morrell's Brigade, Porter's Division, Army of the Potomac, to March, 1862. 2nd Brigade, 1st Division, 3rd Army Corps, Army of the Potomac, to May, 1862. 2nd Brigade, 1st Division, 5th Army Corps, Army of the Potomac, to June, 1864.
SERVICE.--Duty at Arlington Heights and Munson's Hill. Defences of Washington, D.C., until March 10, 1862. 
* Moved to the Peninsula, Virginia, March 16. 
* March 17-September 2, 1862 - The Peninsula Campaign 
** April 4, 1862 - Skirmish at Howard's Mill, Virginia 
** Warwick Road April 5. 
** April 5-May 4, 1862 - Siege of Yorktown, Virginia
** May 27-29, 1862 - Operations about Hanover Court House, Virginia 
*** May 27, 1862 - Engagement at Hanover Court House, Virginia 
** June 25-July 1, 1862 - The Seven Days Battles before Richmond, Virginia
*** June 26, 1862 - Engagement at Beaver Dam Creek, Virginia
*** June 27, 1862 - Engagement at Gaines's Mill, Virginia
*** June 30, 1862 - Engagement at White Oak Swamp, Virginia
*** June 30, 1862 - Engagement at Turkey Bridge, Virginia
*** July 1, 1862 - Engagement at Malvern Hill, Virginia
Duty at Harrison's Landing until August 16. Movement to Fortress Monroe, thence to Centreville August 10-28. Pope's Campaign August 28-September 2. Battles of Groveton August 29. Bull Run August 30. 
* September 3-20, 1862 - The Maryland Campaign
** September 17, 1862 - Battle of Antietam, Maryland
** September 19, 1862 - Actions at Sharpsburg and Shepherdstown/Blackford's/Boteler's Fords, Maryland
** Shepherdstown, W. Va., September 20. 
* October 16-17, 1862 - Reconnoissance from Sharpsburg, Maryland to Smithfield, West Virginia
* Battle of Fredericksburg, Va., December 12-15. 
* Expedition to Richard's and Ellis' Fords December 29-30.
* "Mud March" January 20-24, 1863. 
* April 27-May 6, 1863 - The Chancellorsville Campaign
** 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. Rappahannock Station November 7. Mine Run, Campaign November 26-December 2. At Bealeton and guard Orange & Alexandria Railroad until April 30, 1864. Bealeton January 14, 1864 (1 Company). 
* 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 8, 1864 - Combat at Laurel Hill, Virginia
*** May 12, 1864 - Assault on the Salient at Spotsylvania Court House, Virginia
** May 22-26, 1864 - Operations on Line of the North Anna River, Virginia
*** May 25, 1864 - Engagement at Jericho Ford, Virginia
** 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 1-10, 1864 - Battles of Cold Harbor, Virginia 
*** June 1-3, 1864 - Battle of Bethesda Church, VirginiaNot originally listed on unit homepage
* June 10, 1864 - Left front and ordered home for muster out 
* June 21, 1864 - Mustered out of federal service
== Regimental Roster ==
== Regiment Statistical Information ==
Source 	Casualties	Remarks
Dyer 	
* 15 Officers and 194 enlisted men killed and mortally wounded 
* 3 Officers and 66 enlisted men killed by disease
* Total 278	None
Fox 	
* 15 Officers and 194 enlisted men killed and mortally wounded
* Total 209 (Combat Losses)
* Fox lists this unit as:
** 31st on the list of units "sustaining greatest loss in action" (Infantry units with over 200 casualties)
** 83rd on the list of units with losses based on duration of the entire term of service of the unit (10th of the Massachusetts troops)	
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 758, 759, 761, 827, 897, 900, 902, 903, 904, 905, 916, 932, 933, 934, 936, 937, 938, 939, 941, 1251)
* (Pages 3, 11)
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