[1] 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.
[citation needed] In the early 2000s, he was a student of the Military Academy of the Ministry of Defense of the Russian Federation.
[citation needed] In February 2018, Arzumanyan was dismissed from the post of First Deputy Commander of Military Unit No.
[4] On 27 October 2020, President of Artsakh Arayik Harutyunyan appointed Arzumanyan as Minister of Defense.
[citation needed] Following the ceasefire agreement that ended the war, he promised a review of military shortcomings in the Defence Army.