The Battles of Rzhev (Rzhevskaya bitva) were a series of Red Army offensives against the Wehrmacht between January 8, 1942, and March 31, 1943, on the Eastern Front of World War II. The battles took place in the northeast of Smolensk Oblast and the south of Tver Oblast. Due to the high losses suffered by the Soviet Army, the campaign became known by veterans and historians as the "Rzhev Meat Grinder" (Rzhevskaya myasorubka). The major operations that were executed in this area of the front were: Rzhev–Vyazma strategic offensive operation (8 January – 20 April 1942) of the Kalinin Front, Western Front, Bryansk Front, and Northwestern Front Sychyovka–Vyazma offensive operation (8 January – 20 April 1942) of the Kalinin Front Mozhaysk–Vyazma offensive operation (Operation Jupiter) (10 January – 28 February 1942) of the Western Front Toropets–Kholm offensive operation (9 January – 6 February 1942) of the Northwestern Front and reassigned to the Kalinin Front from 22 January 1942 Vyazma airborne operation (18 January – 28 February 1942) of the Western Front (see also Operation Hannover) Rzhev–Vyazma offensive (1942) (3 March – 20 April 1942) Operation Seydlitz and the Soviet defensive battles around Bely and Kholm-Zhirkovsky (2–23 July 1942) launched by 9th Army of Germany to eliminate the salient in the vicinity between Bely and Kholm–Zhirkovsky and annihilate the 39th Army and 11th Cavalry Corps of the Kalinin Front First Rzhev–Sychyovka offensive operation (30 July – 23 August 1942), (other sources say ending on 30 September or 1 October 1942) by forces of the Kalinin Front and Western Front Second Rzhev–Sychyovka offensive operation (Operation Mars) (25 November – 20 December 1942) by the forces of the Kalinin Front and Western Front Battle for Velikiye Luki (24 November 1942 – 20 January 1943) by 3rd Shock Army of the Kalinin Front Rzhev–Vyazma offensive (1943) (2–31 March 1943) by the forces of the Kalinin Front and Western Front, at the same time, the southern flank offensive operations on the Bryansk Front.