From 2013–2016, he was Commander of the Regional Command "East", and from 2016–2019, he was Commander-in-Chief of the Kazakh Ground Forces. In April 2019, he became Chief of the General Staff.[5] During his work as the Chief of the General Staff, the Arys tragedy took place. Bektanov was considered as accountable to the incident by President Kassym-Jomart Tokayev and was given a formal strict reprimand in response.[6]
Defence minister
On 31 August 2021, Bektanov became the Minister of Defence, succeeding Nurlan Ermekbaev following another tragic explosion in Jambyl Region.[7] On 11 January 2022 he was reappointed as the Minister of Defense in the Smaiylov Cabinet.
Firing and arrest
On 19 January 2022, he was relieved of the post and was replaced by Ruslan Jaqsylyqov.[8] President Kassym-Jomart Tokayev claimed Bektanov did not show good leadership during the 2022 Kazakh unrest. A month later, Bektanov was detained and placed under arrest on suspicion of official inaction during the state of emergency introduced in connection with mass protests.[9]
On March 9, 2023, Bektanov was convicted by the verdict of the Specialized Interdistrict Military Court for Criminal Cases dated February 24, 2023 under part 3 of Article 451 of the Criminal Code of the Republic of Kazakhstan (abuse of power), he was sentenced to imprisonment for a period of 12 years with serving his sentence in an institution of the maximum security penal system.[10]