40th New York Infantry Regiment

40th New York Infantry Regiment
ActiveJune 27, 1861, to June 27, 1865
CountryUnited States
AllegianceUnion
BranchInfantry
Nickname(s)"Mozart Regiment" or the "Constitution Guard"
Engagements

The 40th New York Infantry Regiment, also known as the "Mozart Regiment" or the "Constitution Guard", was an infantry regiment that served in the Union Army during the American Civil War.

The 40th New York also had the 2nd highest numbers of casualties of any New York Regiment, behind the famous 69th New York Infantry of the Irish Brigade.