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