sentences:  The Bezmer Air Base is situated in the eastern part of the Upper Thracian Lowland, in Yambol Oblast (Region), 10 km west of the city of Yambol and 30 km southeast of the city of Sliven, between the villages of Bezmer and Bolyarsko, and near the Sofia-Burgas railway.The base takes its name from the nearby village, which is named after Khan Bezmer of Bulgaria (7th Century AD).The strategic location and particularly favorable weather conditions of the area was appreciated already during World War I, when the Imperial German Air Service built in Yambol a base for zeppelins used for reconnaissance and bombing missions to Romania, Russia, Sudan and Malta.