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The Battle of Sejny took place in September 1920 during the Polish–Soviet War and Polish–Lithuanian War. Polish Army forces commanded by Edward Smigly-Rydz and Stefan Dab-Biernacki, clashed with Lithuanian units near the towns of Sejny and Suwałki (current northeastern Poland). In July 1920, the Lithuanians took advantage of desperate position of Poland, which at that time was invaded by Soviet Russia. They captured Suwalki, Sejny and Augustów, and their troops moved southwards, reaching the line of the Augustów Canal. In late August, after the victorious Battle of Warsaw, Operational Group of the Polish Army came to the area of Suwałki. Following orders of Edward Rydz-Śmigły, Polish forces took Augustów from Lithuanians in a surprise attack on August 28.〔 Confused and disoriented, Lithuanians retreated from Suwałki and Sejny on August 30 and 31.〔 The Lithuanians reorganized, gathered their forces (11 battalions with 7,000 soldiers),〔Lesčius (2004), p. 307〕 and organized a counterattack to "defend their border" on September 2.〔 The goal was to take and secure the Augustów–Lipsk–Hrodna line. The Lithuanians succeeded in taking Sejny and Lipsk and by September 4 reached the outskirts of Augustów.〔 On September 5, the Poles counterattacked and forced the Lithuanians to retreat.〔Lesčius (2004), p. 311〕 On September 9, the Polish forces recaptured Sejny,〔Lesčius (2004), p. 314〕 but the Lithuanians pushed back and regained Sejny and Giby on September 13 and 14.〔Lesčius (2004), p. 317〕 Pending direct negotiations, hostilities were ceased on both sides.〔Lesčius (2004), p. 318〕 On September 8, during a planning meeting of the Battle of the Niemen River, the Poles decided to maneuver through the Lithuanian-held territory to the rear of the Soviet Army, stationed in Hrodna.〔 Polish Northern Assault Group (Polnocna Grupa Uderzeniowa), consisting of infantry and cavalry divisions, was ready to enter action on September 19, with railroad hub of Lida set as its objective. On September 22, Polish units began their attack. The 4th Cavalry Brigade, after scattering Lithuanian infantry, captured bridges over the Neman at Druskininkai. The 1st Legions Infantry Division of Colonel Dab-Biernacki attacked Lithuanian 2nd Infantry Division at Sejny, capturing the town after a six-hour battle. Lithuanian losses were estimated at 1,700, most of them were prisoners of war. Following the capture of Sejny, the Poles marched towards Druskininkai and Lida. Several clashes with the enemy resulted in the destruction of Lithuanian 7th Infantry Regiment. Polish forces then marched, as planned on September 8, across the Neman River near Druskininkai and Merkinė to the rear of the Soviet forces near Hrodna and Lida.〔 The Battle of Sejny is commemorated on the Tomb of the Unknown Soldier, Warsaw, with the inscription "SEJNY 1 - 10, 22 IX 1920". == Sources == * Leksykon wojny polsko-rosyjskiej 1919-1920. Warszawa: Oficyna Wydawnicza RYTM 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 Sejny」の詳細全文を読む スポンサード リンク
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