The Battle of Brody was a tank battle fought between the 1st Panzer Group's III Army Corps and XLVIII Army Corps (Motorized) and five mechanized corps of the Soviet 5th Army and 6th Army in the triangle formed by the towns of Dubno, Lutsk and Brody between 23 and 30 June 1941. It was one of the most intense armored engagements in the opening phase of Operation Barbarossa, and some say that it may surpass the more famous Battle of Prokhorovka. It is by far the battle with the largest number of tanks participating. It is known in Soviet historiography as one of the "border defensive battles". Although the Red Army formations inflicted heavy losses on the German forces, they were outmanoeuvred and suffered enormous losses in tanks. Poor Soviet logistics, German air supremacy and a total breakdown in Red Army command and control ensured victory for the Wehrmacht despite overwhelming Red Army numerical and technological superiority.