as containing "dense copses and innumerable banked hedges with ditches flanking fields and lining sunken lanes"; while this would allow the troops to move in a concealed fashion, it would also make deployment difficult, and the numerous lanes would restrict movement in the heat of battle. Order of battle There are no definitive orders of battle for Newbury, as official contemporary evidence is thin; it is possible to glean some information from both later official reports and contemporary accounts, which allow for a reconstruction of the likely disposition of each force. The Royalists were led by Charles I personally, with William Vavasour commanding the right wing, Prince Rupert the left, and Sir John Byron the centre. Artillery support consisted of 20 cannons in total: 6 heavy, 6 medium and 8 light. Initial Royalist and Parliamentarian estimates were of a force of around 17,000 men; modern estimates are of around 7,500 infantry, and 7,000 cavalry. Essex led the Parliamentarians, commanding both the entire force and, separately, the right wing; the left wing was commanded by Philip Stapleton. Artillery support was provided by two heavy cannons and around 20 light cannons; most of the heavy artillery was left at Gloucester to help defend the city. Estimates as to the total number of men vary between 7,000 and 15,000; John Barratt, noting the losses at Gloucester, estimates that Essex's force totalled around 14,000 men, with 6,000 cavalry and dragoons and 8,000 infantry. Battle Essex attacks The battle began on 20 September; Essex's army was roused before dawn, and initial reports stated he had gone "from regiment to regiment...[putting] the question of a battle unto them". After consultation, the army advanced with "most cheerful and courageous spirits" at around 7 am. Divided into "three bodies of Foot, both lined and flanked with bodies of Horse", with a reserve behind them, the army was preceded by Stapleton's cavalry, which quickly cleared the Royalist pickets and allowed Essex's advance to Wash Common, a patch of open ground between the two forces. This march took approximately an hour due to the heavy clay soil being soaked from the previous night's rain; the open space before Biggs Hill, the objective of their march, allowed for a much welcome chance to regroup. Rupert had established a cavalry guard on Biggs Hill; while the size is unknown, it was large enough to attack the Parliamentarian horse head-on. Stapleton waited until