From WWII Enlistment Records at Ancestry.com:

Arlen Brewer
Born 1920
Race: White, citizen
Native State: Tennessee
State of Residence: Tennessee
County or City: Wayne
Enlistment Date: 26 Aug 1942
Enlistment State: Georgia
Enlistment City: Fort Oglethorpe
Branch: Branch Immaterial - Warrant Officers, USA
Branch Code: Branch Immaterial - Warrant Officers, USA
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 (Enlistment Men)
Source: Civil Life
Education: 2 Years of High School
Civil Occupation: Unskilled Construction Occupations, n.e.c.
Marital Status: Single, without dependents
Height: 67
Weight: 134