Maybe Ancestry.com -- Browser Upgrade has some info, you may need his middle name though. Hope that helps you. Good luck
According to Ancestry.com, there is only 1 Charles B. Herman on the U.S. World War II Army Enlistment Records, 1938-1946: Name: Charles B Hermann Birth Year: 1913 Race: White, citizen (White) Nativity State or Country: Illinois State of Residence: Washington County or City: Benton Enlistment Date: 24 Nov 1943 Enlistment State: Washington Enlistment City: Spokane Branch: No branch assignment Branch Code: No branch assignment Grade: Private Grade Code: Private Term of Enlistment: Enlistment for the duration of the War or other emergency, plus six months, subject to the discretion of the President or otherwise according to law Component: Selectees (Enlisted Men) Source: Civil Life Education: 4 years of high school Civil Occupation: Skilled cement and concrete finishers Marital Status: Married If you'd like, I can try to find some census data on him, etc...