At 5:00 on 6 April, 20 Luftwaffe Messerschmitt Bf 109Es attacked Sorlince airport, destroying all aircraft of the 2nd Air Reconnaissance Group attached to the 5th Army. An hour later, Luftwaffe attacked Niš airfield, damaging four aircraft of the 610th Eskadrila. During this attack, German flying ace and a commander of &lt;a href="Lehrgeschwader%202%23I.%28Jagd%29/LG%202"&gt;I. (Jagd)/LG 2&lt;/a&gt; Herbert Ihlefeld was hit by small arms fire forcing him to crash-land near the village of Donji Dušnik, after which he was imprisoned by the Yugoslav Army. Bombing of Belgrade in the morning of 6 April resulted in the destruction of communication between the Staff of the 5th Army and the Supreme Command of the Yugoslav Army.