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The First Battle of Smolensk was the first major battle during Operation Barbarossa in World War II that significantly delayed the advance of Hitler's Wehrmacht in the USSR. It took place in the region around the city of Smolensk between 10 July and 10 September 1941, about 400 km west of Moscow. At that point the Wehrmacht had advanced 500 km into the USSR in the mere 18 days that had elapsed since the start of the invasion on 22 June 1941. The Wehrmacht fielded Army Group Centre's 2nd Panzer Group and the 3rd Panzer Group. The Red Army fielded the Western Front, Reserve Front, Central Front, and Bryansk Front. Ultimately, the Soviet 16th, 19th and the 20th Armies were encircled and destroyed just to the south of Smolensk, though significant numbers from the 19th and 20th managed to escape the pocket. While a significant temporary success for Hitler, the losses in terms of men and materiel incurred by the Wehrmacht during this drawn-out battle were enormous and—together with the 2-month delay in the march towards Moscow—proved decisive for the Wehrmacht's defeat by the Red Army at the end of the Battle of Moscow three months later in December 1941.〔Glantz (1995)〕 ==Background and Planning== On 22 June 1941, Axis nations invaded the Soviet Union in Operation Barbarossa. During the opening phase, the campaign met with spectacular gains, as the surprised Soviet troops were not able to offer coordinated resistance. After 3 weeks of fighting, the Germans had reached the Dvina and Dnieper Rivers and planned for a resumption of the offensive effort. The main effort, targeted towards Moscow, was carried out by Army Group Centre commanded by Fedor von Bock. Its next target on the way to the Soviet capital was the town of Smolensk. The German plan called for the 2nd Panzer Group (later 2nd Panzer Army) to cross the Dnieper, closing on Smolensk from the south, while the 3rd Panzer Group (later 3rd Panzer Army) was to encircle the town from the north.〔 After their initial defeats, the Red Army sought to reorganise itself and established several measures to ensure a more determined resistance. A new defensive line was established around Smolensk. Stalin placed Field Marshal Timoshenko in command, and transferred five armies out of the strategic reserve to Timoshenko's control. These armies had to conduct a series of counteroffensives to blunt the German offensive. The German high command was not aware of the Soviet build-up until they encountered them on the battlefield.〔Glantz (1995), p. 58.〕 Facing the Germans along the Dnieper and Dvina rivers were stretches of the Stalin Line fortifications. The defenders were the 13th Army of the Western Front, and the 20th Army, 21st Army, and the 22nd Army of the Soviet Supreme Command (Stavka) Reserve. Another army, the 19th Army, was forming up at Vitebsk, while the 16th Army was arriving at Smolensk.〔 In Soviet historiography, the Battle of Smolensk (actually a full campaign) would take place in several phases, divided into distinct operations to halt the German offensive and the pincers. *Battle of Smolensk (10 July – 10 September 1941) ::Smolensk Defensive Operation (10 July – 10 August 1941) ::Smolensk Offensive Operation (21 July – 7 August 1941) ::Rogechev-Zhlobin Offensive Operation (13–24 July 1941) ::Gomel-Trubchevsk Defensive Operation (24 July – 30 August 1941) ::Dukhovshina Offensive Operation (17 August – 8 September 1941) ::Yelnia Offensive Operation (30 August – 8 September 1941) ::Roslavl-Novozybkov Offensive Operation (30 August – 12 September 1941) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Battle of Smolensk (1941)」の詳細全文を読む スポンサード リンク
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