United States Regiments & Batteries * United States Regulars
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1861
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| February | At Washington, D.C. |
| April | Ordered to Fort Pickens, Fla. Garrison duty at Fort Pickens attached to District of Pensacola, Fla., Dept. of the South |
| November 22-23 | Engagement with Confederate Batteries at Pensacola |
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1862
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| January 1 | Bombardment of Forts McRae and Barrancas, Pensacola Harbor |
| August | Attached to District of West Florida, Dept. of the Gulf |
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1864
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| May | Moved to Fort Hamilton, New York. Attached to Dept. of the East |
| August | Moved to to Fort McHenry, Baltimore. Duty at Fort McHenry and at Federal Hill attached to Defenses of Baltimore, Md., 8th Corps, Middle Department until August 1865 |