 Complete the following phrase:  Most of Petreforce suffered a similar fate. The 23rd Northumbrian Division was overrun by the 8th Panzer Division on 20 May. Meanwhile, the 5th Infantry Division and the 50th Northumbrian Motor Division had taken up positions in Arras, and the 5th Division took command of the garrison. On 25 May, Petreforce was officially abolished. The remts of the 12th Division were evacuated back to England. The 36th Brigade evacuated 