[5] He is a graduate of Defence Services Command and Staff College and Armed Forces War Course, Mirpur Bangladesh.

He has served as brigade major and general staff officer grade one and director military operations in the headquarters of the Bangladesh Army.

He has also served as instructor in the Bangladesh Military Academy, directing the Staff of War Course at the National Defence College.

He has served as the Adjutant General of the Bangladesh Army and vice chairman of Trust Bank.

[citation needed] Rahman has served in peace support operations under United Nations in Mozambique and Sierra-Leone.