Share This Article 1. In 536 AD, this man reconquered the city of Rome for the Byzantine Empire. Flavius Belisarius Flavius Stilicho Ambrosius Aurelianus Desiderius 2. The counterweight trebuchet arrived in England when Prince Louis of France besieged this castle in 1216. Carlisle Castle Windsor Castle Hetford Castle Dover Castle 3. The last American ground-combat unit left Vietnam in this year. 1972 1973 1975 1970 Loading …