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 remnants of the 12th Division were evacuated back to England. The 36th Brigade evacuated via Dunkirk, and the rest of the division was largely evacuated via Cherbourg during Operation Aerial. Divisional casualty information is sparse. The 35th Brigade started the campaign with 2,400 men, and was reduced to 1,234 after their encounter with the 2nd Panzer Division.