On 11 July, 9./StG 77, under III./StG 77 lost another five Ju 87s as it supported attacks against the 69th Army. The 183 IAP were their attackers. In the afternoon, 50 Ju 87s supported the 1st SS Panzer Division Leibstandarte SS Adolf Hitler's attack on Hill 252.2. On 12 July StG 77 was involved in the Battle of Prokhorovka. While the Ju 87s could only fly 150 sorties in support, but with StG 2 the attacked with great success against Soviet armour advancing in the open. The 31st Tank Brigade, of the 29th Tank Corps, suffered heavy casualties. The 36th Tank Brigade's commander was wounded by aircraft when his tank was destroyed. On 14 July, another six Ju 87s were lost supporting the XXXXVIII Panzer Corps.