The division was formed on 15 December 1940 in Wehrkreis II, in the 12th mobilisation wave, using elements of the 8th Infantry Division and the 28th Infantry Division. The division fought on the Eastern Front, for much of its existence it was part of the Ninth Army assigned to Army Group Centre. On 25 November 1942 the Soviets simultaneously launched attacks against the eastern, western and northern flanks of the German Rzhev salient, known as Operation Mars. North of the Osuga River, the 102nd successfully repelled repeated assaults by 20,000 infantry and over 100 tanks of three Soviet 31st Army divisions. Soviet infantry clad in winter white advanced in echelon, their ranks interspersed with supporting tanks. German artillery, machine guns, and small arms fire tore gaping holes in the ranks of the assaulting infantry as antitank weapons picked off the accompanying tanks. For three days and at a cost of more than half of their riflemen and most of their tanks, the Soviets hurled themselves in vain at the 102nd Division's prepared defenses. Faced with this determined resistance, the 31st Army's assault collapsed, and, despite Zhukov's and Konev's exhortations, it could not be revived. In 1943 it was involved in Operation Citadel and its aftermath, losing much of its strength in a series of fierce defensive battles around Orel; by October it was listed as assigned to the Second Army and reduced to Kampfgruppe level. In January 1944, the division was assigned to the Ninth Army, covering its southern flank in the Pripet Marshes. It avoided the disastrous encirclement and destruction of much of the Ninth Army around Bobruisk in late June during the Soviet Operation Bagration, and was then assigned back to the Second Army, holding a line of defence along the River Narew. The Soviet army's East Prussian Offensive, from 13 January 1945 onwards, broke the under-strength division, which was pushed north and trapped in the Heiligenbeil pocket, being reassigned to the Fourth Army. In February it held the perimeter near Mehlsack, before being assigned to defend Braunsberg until it fell on 20 March. A few troops broke through westwards and eventually surrendered to the Americans in Schleswig-Holstein: the other encircled divisional elements in the kessel were eventually taken over by the 28th Jäger Division, being involved in the final defence of the Kahlholzer Haken peninsula at Balga.
