The '2d Rhode Island Infantry 018' refers to a military unit that served during the U.S. Civil War. This infantry regiment, specifically the second from the state of Rhode Island, was part of the Union Army. It was one of several units raised in response to President Lincoln's call for troops to suppress the Confederate rebellion. The 2d Rhode Island Infantry participated in significant battles such as the Battle of Antietam and the Battle of Gettysburg. Their service significantly contributed to the eventual Union victory in the Civil War.