Case Blue
Joseph Stalin, however, believed it to be a German ruse, remaining convinced that the primary German strategic goal in 1942 would be Moscow, in part due to Operation Kremlin ("Fall Kreml"), a German deception plan aimed at the city. As a result, the majority of Red Army troops were deployed there, although the direction from which the Case Blue offensive would come was still defended by the Bryansk, Southwestern, Southern and North Caucasian Fronts. With about 1 million soldiers at the front line and another 1.7 million in reserve armies, their forces accounted for about one quarter of all Soviet troops. Following the disastrous start of Case Blue for the Soviets, they reorganised their frontlines several times. Over the course of the campaign, the Soviets also fielded the Voronezh Front, Don Front, Stalingrad Front, Transcaucasian Front, and the Caucasian Front, though not all existed at the same time.