They were to strongly assault the defenders, if the town was lightly held. If Amman was found to be held in strength the assault on the town was to be deferred until infantry could reinforce the mounted infantry. Only the outlying or forward trenches were to be attacked, artillery was to fire on the town, all lines of retreat northwards were to be cut. Aerial bombing of Amman was requested. The 1st Battalion British West Indies Regiment arrived at Suweileh at 07:00 to take over garrison duties from the New Zealand Mounted Rifles Brigade. Within two hours the light horse and mounted rifle brigades were in sight of Amman and the attack had begun. The movement of Ottoman units were seen behind Amman, on Hill 3039. Two batteries of small guns and a number of machine guns opened fire. Several Ottoman posts from Amman were attacked and captured by the 2nd Light Horse Brigade along with 106 prisoners and four machine guns. One regiment of the 1st Light Horse Brigade was sent at 10:00 to reinforce the left flank of the New Zealand Mounted Rifles Brigade and came under Meldrum's command. The Auckland Mounted Rifles Regiment advanced half an hour later, on the right of the Wellington Mounted Rifles Regiment, with the 2nd Light Horse Brigade on their left. They eventually forced the Ottoman front line defenders to retire back to the main line of defence, which was also strongly supported by machine guns. At noon the Canterbury Mounted Rifles Regiment advanced towards "the main entrance to Amman," but they were stopped by fire from concealed machine guns. However, by 13:30, fighting in the streets of the town was underway, when the Auckland Mounted Rifles Regiment continued their steady advance, and the 5th Light Horse Regiment entered the southern part of the town. At 14:30, a second regiment of 1st Light Horse Brigade was ordered to reinforce the New Zealand Mounted Rifles Brigade's left. The Canterbury Mounted Rifles Regiment advanced to a position from which they were able to enfilade the defenders in the Citadel, and shortly afterwards the 10th Squadron, with a troop of the 8th Squadron, attacked and "stormed" the Citadel. By 15:00 the Canterbury Mounted Rifles Regiment was in Amman and, with the 5th Light Horse Regiment, were "hunting out snipers and capturing prisoners." By 16:30 on 25 September the Anzac Mounted Division, captured Amman along with between 2,500 and 2,563 prisoners, 300 sick, ten guns (three of which were heavy), and 25 machine guns.