During the Hussite Wars the town was completely destroyed for the first time in 1431. The declaration of war by Margrave Albrecht Achilles to the city of Nuremberg in 1449 led to the First Margrave War. However, as the army of Albrecht could not completely enclose the city, Nuremberg troops broke out again and devastated the Margravial towns and villages. As reported by a Nuremberg chronicler, they "burnt the market at most in Erlangen and brought a huge robbery". As soon as the town had recovered, Louis IX, Duke of Bavaria attacked the Margrave in 1459. Erlangen was raided and plundered again, this time by Bavarian troops. In the following years the town recovered again. Erlangen was spared from the Peasants' War in 1525 and the introduction of the Reformation in 1528 was peaceful. However, when Margrave Albert Alcibiades triggered the Second Margrave War, Erlangen was attacked again by the Nurembergers and partially destroyed. It was even considered to completely abandon the town. Because Emperor Charles V imposed the imperial ban on Albrecht, the Nurembergers incorporated Erlangen into their own territory. Albrecht died in January 1557. His successor, George Frederick, requested that the imperial sequestration over the Principality of Kulmbach be reversed and was able to take back the government one month later. Under his rule, the town recovered from the war damage and remained unharmed until well into the Thirty Years' War.