12th Connecticut Infantry

== Regimental History and Service Record ==
Organized at Hartford November 19 to December 3, 1861. Left State for Ship Island, Miss., February 24, 1862, arriving there March 9. Attached to 1st Brigade, Dept. of the Gulf, to October, 1862. Weitzel's Reserve Brigade, Dept. of the Gulf, to January, 1863. 2nd Brigade, 1st Division, 19th Army Corps, Dept. of the Gulf, to August, 1863. 3rd Brigade, 1st Division, 19th Army Corps, to February, 1864. 2nd Brigade, 1st Division, 19th Army Corps, Dept. Gulf, to July, 1864, and Army of the Shenandoah, Middle Military Division, to April, 1865. 2nd Brigade, 1st Provisional Division, Army Shenandoah, April 1865. 2nd Brigade, Dwight's Division, Dept. of Washington, to June, 1865. District of Savannah, Dept. of the South, to August, 1865.
SERVICE.--Duty at Ship Island, Miss., tilt April 15, 1862. Operations against Fort St. Phillip and Jackson, Mississippi River, April 15-28. Occupation of New Orleans, La., May 1, the first regiment to land. Duty at Camp Parapet and Carrollton until October. Expedition to Lake Pontchatrain, Pass Manchac and up Tchefuncta and Pearl rivers July 25-August 2. Skirmishes at Madisonville and near Covington July 27. Operations in District of La Fourche October 24-November 6. Occupation of Donaldsonville October 25. Action at Georgia Landing, near Labadieville, October 27. Duty in District of La Fourche until February, 1863. Expedition to Bayou Teche January 13-15. Action with steamer "Cotton" January 14. Moved to Brashear City February and duty there until March. Operations against Port Hudson March 7-27. Pattersonville March 28 (Detachment). Operations in Western Louisiana April 9-May 14. 
* April 11-20, 1863 - The (I) Bayou Teche Campaign 
Port Bisland, near Centreville, April 12-13. Irish Bend April 14. Opelousas April 20. Expedition to Alexandria and Simsport May 5-18. Near Cheyneyville May 18. Movement to Bayou Sara, thence to Port Hudson May 22-25. Siege of Port Hudson May 25-July 9. Assaults on Port Hurlson May 27 and June 14. Surrender of Port Hudson July 9. Operations in Western Louisiana July to September, 1863. Sabine Pass (Texas) Expedition September 4-11. 
* October 3-November 30, 1863 - The (II) Bayou Teche Campaign 
Duty at New Iberia until January, 1864. Move to New Orleans and on veteran furlough until May. Duty at Carrollton until July. Moved to Fortress Monroe, Va., thence to Washington, D.C., July 5-13. Snicker's Gap expedition July 14-23. Sheridan's Shenandoah Valley Campaign, August to December. Battle of Opequan, Winchester, September 19. Fisher's Hill September 22. Battle of Cedar Creek October 19. Duty at Winchester, Newtown and Summit Point until April, 1865. Moved to Washington, D.C., April 21, and duty there until June. Grand Review May 23-24. Moved to Savannah, Ga., June 1-5 and duty there until August. Mustered out August 12, 1865.
Regiment lost during service 6 Officers and 65 Enlisted men killed and mortally wounded and 8 Officers and 196 Enlisted men by disease. Total 273.
== Regimental Roster ==
 
 
 Field and Staff Officers
 
 
 Regimental Band
 
 
 Company A
 
 
 Company B
 
 
 Company C
 
 
 Company D
 
 
 Company E
 
 
 Company F
 
 
 Company G
 
 
 Company H
 
 
 Company I
 
 
 Company K
 
 
 Unassigned
 
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== Regiment Statistical Information ==
== Legacy ==
== Notes ==
== Sources == 
* (Pages 745, 749, 1011-1012)
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