Byzantine conquest of Bulgaria Part of the Byzantine-Bulgarian Wars Date 968-1018 Location First Bulgarian Empire and Byzantine Empire Result Decisive Byzantine victory Dissolution of the First Bulgarian Empire Territorial changes Byzantium establishes control over Bulgaria and much of the Balkan Peninsula, the Kingdom of Hungary expands into Transylvania and Banat, Pechenegs settle in Moldavia and Wallachia. Belligerents Bulgarian Empire Kievan Rus' (970-971) Pechenegs Byzantine Empire Kievan Rus' (968-969) Kingdom of Hungary Principality of Duklja Kingdom of Croatia Commanders and leaders Samuel Roman Gavril Radomir Ivan Vladislav † Krakra Ivats John I Tzimiskes Basil II Nikephoros Ouranos Theophylact Botaneiates † Nikephoros Xiphias Constantine Diogenes