won out: the attack would begin without delay. Only two tank divisions of 15th Mechanized Corps in the south and a single tank division of 22nd Mechanized Corps in the north were in position to begin the attack on the 24th. Soviet counter-attacks Three Soviet formations deployed a potent force of modern T-34 and KV tanks: the 4th, 8th, and 15th Mechanized Corps. The 717 such tanks comprised almost a half of the country's 1,600 production of these two models. Throughout the battles, the scale of the intended operations and the precise role of each corps in the plan were communicated poorly or not at all. Ryabyshev noted that "the Corps battle orders spoke only to its own mission objectives". There was little to no communication between the individual corps to ensure co-ordination. 10th Tank Division The Soviet 10th Tank Division was subordinate to 15th Mechanized Corps. On 22 June 1941, the forward battalions captured Radekhiv from the German infantry, losing two tanks. The next day it faced the German 11th Panzer Division there, destroying 20 German tanks and losing 6 T-34 tanks and 20 BT tanks. It withdrew in an orderly fashion because of a lack of ammunition. On 26 June 1941, the division destroyed 23 German tanks and an infantry battalion near Radekhiv, losing 13 KV and 12 BT-7 tanks. 15th Mechanized Corps Commanded by I. I. Karpezo. The 15th Mechanized Corps as a whole had 749 tanks, including 136 T-34 and KV tanks. Due to a series of inconsistent orders, the Corps spent the battle moving chaotically in the Radekhiv–Brody–Busk triangle. Except for the two engagements with the 10th Tank Division, its forces were not in combat. On 7 July 1941 it reported in Berezovka ( from the former border) with nine per cent of its tanks. 22nd Mechanized Corps Commanded by Major-General S. M. Kondrusev. On 24 June the 22nd Mechanized Corps attacked towards Voinitsa. On 29 June it reported having only 19 per cent of its former number of tanks. On 1 July one regiment unsuccessfully attacked toward Dubno. On 15 July 1941 the 22nd MC had 4 per cent its tanks remaining. Major General Semyon Kondrusev was killed by a shell during fighting near the village of Aleksandrovska in the Volyn region on June 24, 1941. 19th Mechanized Corps Commanded by Major General Nikolay Feklenko. On 26 June it attacked towards Dubno from the