 Spinola's army was initially estimated between 7,000 or 9,000 infantry and 3,000 cavalry, but a few days later, the new Dutch reports estimated the Spaniards numbered about 16,000–17,000 men.At the end of July, Leaving behind 50 infantry companies to guard Ijzendijke Maurice quickly moved the rest of his army, including 61 infantry companies and 6 cavalry companies, towards Deventer.He arrived there on 10 August.