the battle itself, the failure of the Red Army to properly regroup during the prelude to the battle and the ability of the Germans to effectively collect intelligence on Soviet movements played an important role in the outcome. Poor Soviet performance in the north and equally poor intelligence-gathering at the hands of Stavka and front headquarters, also eventually spelled doom for the offensive. Nonetheless, despite this poor performance, it underscored a dedicated evolution of operations and tactics within the Red Army which borrowed and refined the pre-war theory, Soviet deep battle. See also First Battle of Kharkov Third Battle of Kharkov References Sources Conflicts in 1942 1942 in Ukraine Battles of Kharkov Battles of World War II involving Germany Battles of World War II involving Italy Battles of World War II involving Romania Battles involving the Soviet Union Battles and operations of the Soviet–German War May 1942 events Encirclements in World War II