Defense Minister Poltorak presents new commander of Pivden Operational Command of Ground Forces of Ukraine's Army Hryshchenko. PHOTOS On April 11, Defense Minister of Ukraine General Stepan Poltorak presented new commander of Pivden Operational Command of the Ground Forces of the Ukrainian Army Major General Andrii Hryshchenko to the personnel of the operational command. Prior to his appointment, Hryshchenko was deputy commander of Pivnich Operational Command. 40 367 37 Ukrainian Politics