Anglo Saxons and Vikings are really clever even though they used to fight each other but they used tactics in their war. They both beat each other to the death. And they both won the war between the two. Anglo Saxons beat Vikings and Vikings beat Anglo Saxons they did not learn from their mistakes.There were also Romans they were really ruthless if you disobeyed them they would chop your head off. they had loads of leaders like Claudius Nero Caligula and Tiberius Nero was cruel he even poisoned his brother I mean would you kill your brother. CRUEL!