The Battle of Debrecen, called by the Red Army the Debrecen Offensive Operation, was a battle taking place from 6 to 29 October 1944 on the Eastern Front in Hungary during World War II.
The offensive was conducted by the 2nd Ukrainian Front under Marshal Rodion Malinovsky. It was opposed by General Maximilian Fretter-Pico's German Sixth Army and the allied Hungarian VII Army Corps of Army Group South Ukraine
The German and Hungarian units were forced to retreat some 160 km and opposed the 2nd Ukrainian Front, which had Debrecen as its strategic objective.
Wikipedia https://en.wikipedia.org/wiki/Battle_of_Debrecen
Wikipedia https://hu.wikipedia.org/wiki/Hortob%C3%A1gyi_p%C3%A1nc%C3%A9loscsata
Address 33, Hortobágy 4071, Hungary
Coordinates 47°34'52.913" N 21°9'31.313" E