 In his report to Stalin of 28 February, Voronov raised the question of military air defence, which since November 1941 had remained without leadership.On 2 June, by order of the People's Commissariat for Defence, all air defence units were subordinated to the front artillery commanders and the chief of the artillery.In early June, Voronov took part in the planning and conducting of operations on the left flank of the Western Front.