General Heinz Guderian, had reached the River Meuse, where they found the bridges had already been destroyed. Rommel was active in the forward areas, directing the efforts to make a crossing, which were initially unsuccessful due to suppressive fire by the French on the other side of the river. By 16 May, the division had reached its assigned objective at Avesnes, where the original plan called for him to stop and await further orders, but Rommel pressed on. On 20 May, the division reached Arras. General Hermann Hoth received orders that the town should be bypassed and its British garrison thus isolated. He ordered the 5th Panzer Division to move to the west and the division to the east, flanked by the SS Division Totenkopf. The following day the British launched a counterattack, deploying two infantry battalions supported by heavily armoured Matilda Mk I and Matilda II tanks in the Battle of Arras. The German 37 mm anti-tank gun proved ineffective against the heavily armoured Matildas. The 25th Panzer Regiment and a battery of 88 mm anti-aircraft guns were called in to support, and the British withdrew. On 24 May, Hitler issued a halt order. The reason for this decision is still a matter of debate. He may have overestimated the size of the British forces in the area, or he may have wished to reserve the bulk of the armour for the drive on Paris. The halt order was lifted on 26 May. 7th Panzer continued its advance, reaching Lille on 27 May. For the assault, Hoth placed the 5th Panzer Division under Rommel's command. The Siege of Lille continued until 31 May, when the French garrison of 40,000 men surrendered. The evacuation of the British Expeditionary Force from Dunkirk concluded on 4 June; over 338,000 Allied troops had been evacuated across the Channel, though they had to leave behind all their heavy equipment and vehicles. The division, resuming its advance on 5 June, drove for the River Seine to secure the bridges near Rouen. Advancing in two days, the division reached Rouen to find the bridges destroyed. From here they moved north, blocking the westward route to Le Havre and the Operation Cycle evacuations and forcing over 10,000 men of the 51st (Highland) Division, French 9th Army Corps and other supporting troops to surrender at Saint-Valery-en-Caux on 12 June. On 17 June, the division was ordered to advance