Harold J. O'Neill papers on the 20th New York Infantry Regiment, 1860-1863, undated.
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United States. Army of the Potomac. Corps, 6th (1862-1865)
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United States. Army. New York Infantry Regiment, 20th (1861-1863)
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United States. Army
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The United States Army is the largest branch of the United States Armed Forces and performs land-based military operations. It is one of the seven uniformed services of the United States and is designated as the Army of the United States in the United States Constitution, Article 2, Section 2, Clause 1 and United States Code, Title 10, Subtitle B, Chapter 301, Section 3001. As the largest and senior branch of the U.S. military, the modern U.S. Army has its roots in the Continental Army, which wa...
O'Neill, Harold J.
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Major (MAJ) Harold J. O'Neill served in the United States Army and was a member of the 83rd Signal Company, 83rd Infantry Division during World War II. The 20th New York Infantry Regiment was composed of volunteers from the Turner societies' "United Turner Rifles" of New York City and its vicinity. The regiment was mustered in on 6 May 1861 for service in the American Civil War. The unit participated in the Seven Days Battles, Antietam, South Mountain, the Battle of Fred...