 This came very unexpectedly; most had predicted the goal of his campaign would be Breda, which had been retaken by the Habsburgs in 1625.Advancing from Grave Frederick Henry laid siege to the city in April 1629, with an army of 24,000 infantry and 4,000 cavalry.Among them were between c.13-14,000 troops from Britain, the English being commanded by Horace Vere, Edward Cecil, Sir Charles Morgan, Edward Harwood, while the Scots were commanded by William Brog, Walter Scott, 1st Earl of Buccleuch, Sir George Hay of Kinfauns, and Sir John Halkett (who was killed at the siege).