Complex sentence: Formation and training of the division came to an end by February 1943 and the division entered the war on February 21,1943 at Alekseyevka, 50km southeast of Oryol.
Split into simpler sentences: Formation and training of the division came to an end by February 1943. The division entered the war on February 21,1943 at Alekseyevka, 50km southeast of Oryol.