105th Regiment, New York Infantry

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Brief History
The 105th Regiment was organized at Leroy, Genesee, N. Y., on March 28, 1862. It was also known as the Le Roy Regiment, the Rochester Regiment and the Irish Regiment. It was consolidated with the 97th Regiment New York Infantry on March 17, 1863, as Companies "F," "G" and "

For more information on the history of this unit, see:


 * The Civil War Archive section, 105th Regiment Infantry "Leroy Regiment", (accessed 16 August 2012).

The New York State Military Museum websitehas a unit history project page for the 105nd Infantry Regiment, also known as the Van Buren Light Infantry and the Calcium Light Regiment.

An overview of the involvement of this regiment in the Antietam Campaign can be seen on the "Antietam on the Web" website.

Companies in this Regiment with the Counties of Origin
Men often enlisted in a company recruited in the counties where they lived though not always. After many battles, companies might be combined because so many men were killed or wounded. However if you are unsure which company your ancestor was in, try the company recruited in his county first.

See the Regiment Roster, for listing of individuals, their company and their involvement.

Company A - recruited principally from Wyoming, Wyoming County

Company B - recruited principally from Lockport, Niagara County

Company C - recruited principally from Holley, Orleans County

Company D - recruited principally from LeRoy, Genesee County

Company E - recruited principally from Batavia, Genesee County

Company F - recruited principally from Brockport, Monroe County

Company G, H, I - Irish Brigade, Western Irish Regiment - recruited principally from Rochester, Monroe County

Company K - recruited principally from Yorkshire and Farmersville of Cattaraugus County and LeRoy, Genesee County.

Source Material

 * Beginning United States Civil War Research gives steps for finding information about a Civil War soldier. It covers the major records that should be used. Additional records are described in ‘New York in the Civil War’ and ‘United States Civil War, 1861 to 1865’ (see below).


 * National Park Service, The Civil War Soldiers and Sailors System, is searchable by soldier's name and state. It contains basic facts about soldiers on both sides of the Civil War, a list of regiments, descriptions of significant battles, sources of the information, and suggestions for where to find additional information.


 * New York in the Civil War describes many Confederate and Union sources, specifically for New York, and how to find them.. These include compiled service records, pension records, rosters, cemetery records, Internet databases, published books, etc.


 * United States Civil War, 1861 to 1865 describes and explains United States and Confederate States records, rather than state records, and how to find them. These include veterans’ censuses, compiled service records, pension records, rosters, cemetery records, Internet databases, published books, etc.


 * New York in the War of the Rebellion, 1861 to 1865, by Frederick Phisterer (Albany : J.B. Lyon, 1912). Google Books, other libraries with this book, FHL book 974.7 M2p, FHL film 1486494-1486496


 * The Union Army : a History of Military Affairs in the Loyal States, 1861-65, Records of the Regiments in the Union Army, Cyclopedia of Battles, Memoirs of Commanders and Soldiers, Reprint of original published: Madison, Wis.: Federal Pub. Co., 1908. Other libraries with this book, FHL book 973 M2ua