Somerset's army was partly composed of the traditional county levies, summoned by Commissions of Array and armed with longbow and bill as they had been at the Battle of Flodden, thirty years before. However, Somerset also had several hundred German mercenary arquebusiers, a large and well-appointed artillery train, and 6,000 cavalry, including a contingent of Spanish and Italian mounted arquebusiers under Don Pedro de Gamboa. The cavalry were commanded by Lord Grey of Wilton, as High Marshal of the Army, and the infantry by the Earl of Warwick, Lord Dacre of Gillesland, and Somerset himself. William Patten, an officer of the English army, recorded its numbers as 16,800 fighting men and 1,400 "pioneers" or labourers.