On 25 February 2019 Zamana was detained on charges of high treason.[3] The Ukrainian military prosecutor's office claimed that because he had, while in office, deprived Ukraine of its air defense system.[3]
Between 2007 and 2009, he was promoted to Chief of Territorial Administration of the Western Operations Command. In 2009 and 2010, he was Deputy Commander for Combat Training - Chief of the Main Directorate for Combat Training and between 2010 and 2011 Chief of Staff, First Deputy Commander of Land Forces.
Between August 2011 and February 2012 he served as the First Deputy Chief of the General Staff of the Ukraine Armed Forces, becoming Chief of the General Staff on 18 February 2012.[1][4]
On 25 February 2019 Zamana was detained on charges of high treason.[3] The Ukrainian military prosecutor's office claimed that because he had, while in office, disbanded anti-aircraft missile divisions and military air force units he had deprived Ukraine of its air defense system.[3]