The city had first been captured by the States in 1579 but regained by the Spanish in the meantime after its betrayal by English
turncoat governor
William Stanley. After the
capture of Zutphen which surrendered on 30 May 1591 Maurice of Orange with his Anglo-Dutch army marched towards Deventer on the right bank of the river
IJssel. Maurice's force numbered 9,000 infantry and 1,200 cavalry, half of the force came from the
British Isles - fourteen English companies under Sir Francis Vere and the ten
Scots companies under Colonel William Balfour. ==Siege==