Doula was commissioned into Bangladesh Army as part of the second war course during
Bangladesh Liberation War. He retired from Bangladesh Army as a major. He has served in Bangladesh missions in Germany, Singapore, Sri Lanka, Italy, and United Kingdom. In May 2006, he was appointed the ambassador of Bangladesh to Japan. In October 2009, he received an extension on his term. He served as the ambassador till August 2010 before being replaced by
A.K.M. Majibur Rahman Bhuiyan. In 2018, Doula contested the national election from Kurigram-4 as a candidate of the
Jatiya Party and received 333 votes. He called for respecting the Bangladesh Liberation War. In January 2022, he called on Prime Minister Sheikh Hasina to negotiate with opposition leaders. After the fall of the Sheikh Hasina led Awami League government, Doula defended the conditions of Hindus in Bangladesh and said those attacked were attacked for supporting the deposed Awami League. ==References==