The Romanian troops evacuated as much equipment as possible, but the dug-in telephone lines could not be recovered and so were eventually used by the Hungarian Army. The Hungarians also salvaged as much metal as possible, which eventually amounted to a huge amount. After all of the useful equipment and materiel had been salvaged, the casemates were blown up by the Hungarians to prevent them from being used again. Nullification The Second Vienna Award was voided by the Allied Commission through the Armistice Agreement with Romania (12 September 1944), whose Article 19 stipulated the following: The Allied Governments regard the decision of the Vienna award regarding Transylvania as void and are agreed that Transylvania (the greater part thereof) should be returned to Romania, subject to confirmation at the peace settlement, and the Soviet Government agrees that Soviet forces shall take part for this purpose in joint military operations with Romania against Germany and Hungary. That came after King Michael's Coup of 23 August 1944, when Romania changed sides and joined the Allies. Thereafter, the Romanian Army fought Nazi Germany and its allies, first in Romania and later in German-occupied Hungary and Slovakia, such as during the Budapest Offensive, the Siege of Budapest, the Bratislava–Brno Offensive, and the Prague Offensive. After the Battle of Carei on 25 October 1944, all the territory of Northern Transylvania was under the control of Romanian and Soviet troops. The Soviet Union kept administrative control until 9 March 1945, when Northern Transylvania reverted to Romania. The 1947 Paris Peace Treaties reaffirmed the borders between Romania and Hungary, as they had been originally defined in the Treaty of Trianon, 27 years earlier. See also First Vienna Award Carpatho-Ukraine Molotov–Ribbentrop Pact References Sources Árpád E. Varga. Erdély magyar népessége 1870-1995 között. Magyar Kisebbség 3–4, 1998, pp. 331–407. Alessandro Vagnini. German-Italian Commissions in Transylvania 1940-1943. A crucial key Study for Italian Diplomacy, Studia Universitatis Petru Maior, Historia Volume 9, 2009, pp. 165–187. External links Text of the Second Vienna Award Árpád E. Varga, Essays on Transylvania's Demographic History. (Mainly in Hungarian, but also in English and Romanian.) Проблема Tрансильвании в отношениях СССР с союзниками по антигитлеровской коалиции (июнь 1941 г. — май 1945 г.) (an article on the Allies and the question of Transylvania) Romania in World War II History of Cluj-Napoca Territorial disputes of Romania Treaties of the Kingdom of Hungary (1920–1946) Territorial disputes of Hungary 1940 in