Charles Reizenstein enlisted in the Union Army at the start of the Civil War but was discharged for medical reasons, as can be seen in this document. He enlisted again and served later in the war.

Date May 25, 1861
Identifier MSS73_B001_F001_cert_disability_discharge
Collection Reizenstein Family Papers
Source Rauh Jewish Archives at the Heinz History Center
Family The Reizenstein Family : View Family Member
View Document