From 1991 to 1992, during the First Nagorno-Karabakh War, he was a volunteer in the Company of Bekor Ashot, taking part in the battles for Füzuli, Martakert, Askeran and Kelbajar. From 1995 to 1999, Arzumanyan commanded a separate reconnaissance battalion.[citation needed] In 1999, he graduated from the Yerevan State University.[citation needed] In the early 2000s, he was a student of the Military Academy of the Ministry of Defense of the Russian Federation. Then, he was in the position of division commander.[citation needed] In February 2018, Arzumanyan was dismissed from the post of First Deputy Commander of Military Unit No. 19916.[2] On 24 June 2019, he was appointed Deputy Commander of the Defense Army.[3] A year later, on 21 June, he was relieved of this position.[4] On 27 October 2020, President of ArtsakhArayik Harutyunyan appointed Arzumanyan as Minister of Defense.[5] His appointment followed the injury of his predecessor Jalal Harutyunyan during the Second Nagorno-Karabakh War.[6] Along with his appointment to the post, Arzumanyan was awarded the rank of Lieutenant general.[citation needed] Following the ceasefire agreement that ended the war, he promised a review of military shortcomings in the Defence Army.[7] He was dismissed on 11 September 2021.[8][9]
