The synonym for casualties is deaths.
injurys
This vague question does not indicate which casualties. I am including a link below in the hopes you find an answer you are looking for.
About 38,000 casulties; the Union had around 5,000 and the Confederacy had around 33,000. The Confederacy also had 30,000 people surrender.
During his three tours in the 'Nam, he never once became a casualty.