 He was elected to the presidencies of the History Society, the Guyana Heritage Society, the University of Guyana Guild of Graduates; and the Guyana Chess Federation.He was also a member of the University of Guyana Council, Association of Caribbean Historians, Caribbean Studies Association, Guyana Press Association, Guyana Book Foundation, and is currently a member of the Guyana Legion and the Board of Trustees of the Guyana Veterans Foundation.Granger has written extensively on national defence and public security issues.