This Siege of Antwerp took place during the Eighty Years' War from July 1584 until August 1585. At the time Antwerp was not only the largest Dutch city but was also the cultural, economic and financial centre of the Seventeen Provinces and of north-western Europe. On 4 November 1576, unpaid Spanish soldiery mutinied: they plundered and burnt the city during what was called the Spanish Fury. Thousands of citizens were massacred and hundreds of houses were burnt down. As a result, Antwerp became even more engaged in the rebellion against the rule of Habsburg Spain. The city joined the Union of Utrecht (1579) and became the capital of the Dutch Revolt, which no longer was merely a Protestant rebellion but had become a revolt of all Dutch provinces.