 The Soviet Union had some 23,000 tanks in service, of which about 11,000 were in the western military districts that faced the German invasion force. Hitler later declared to some of his generals, "If I had known about the Russian tank strength in 1941 I would not have attacked". However, maintenance and readiness standards were very poor; ammunition and radios were in short supply, and many armoured units lacked the trucks for supplies. The most advanced Soviet tank models – the KV-1 and T-34 – which were superior to all current German tanks, as well as all designs still in development as of the summer 1941, were not available in large numbers at the time the invasion commenced. Furthermore, in the autumn of 1939, the Soviets disbanded their mechanized corps and partly dispersed their tanks to infantry divisions; but following their observation of the German campaign in France, in late 1940 they began to reorganize most of their armored assets back into mechanized corps with a target strength of 1,031 tanks each. But these large armoured formations were unwieldy, and moreover they were spread out in scattered garrisons, with their subordinate divisions up to 100 kilometres apart. Furthermore, the reorganization was still in progress and incomplete when Barbarossa commenced. Soviet tank units were rarely well equipped, and they lacked training and logistical support. Units were sent into combat with no arrangements in place for refueling, ammunition resupply, or personnel replacement. Often, after a single engagement, units were destroyed or rendered ineffective. The Soviet numerical advantage in heavy equipment was thoroughly offset by the superior training and organization of the Wehrmacht.
