The military part of the federal defense force consists of the Heer ( Army ) , Marine ( Navy ) , Luftwaffe ( Air Force ) , Streitkräftebasis ( Joint Support Service ) , and the Zentraler Sanitätsdienst ( Joint Medical Service ) branches .
And two smaller ones : Joint Support Service ( Streitkräftebasis ) and Central Medical Services ( Zentraler Sanitätsdienst ) .