 The siege was part of Maurice's campaign of 1597, a successful offensive against the Spaniards during what the Dutch call the "Ten Glory Years".After the siege and capture of Bredevoort, a part of Maurice's army, which included Scots and Frisians under Count Solms and Van Duivenvoorde, went from Winterswijk to Gronau.On 18 October, Prince Maurice, along with his cousin (and brother-in-law) William Louis, followed the cavalry and the artillery that had been in service at Bredevoort, which had been moved the day before.