SS Hitlerjugend remained on strength. After the landings, the first Waffen-SS unit in action was the 12 SS Hitlerjugend, which arrived at the invasion front on 7 June, in the Caen area. The same day they committed the Ardenne Abbey massacre against Canadian army prisoners of war. The next unit to arrive was the 17 SS Götz von Berlichingen on 11 June, which came into contact with the 101st Airborne Division. The SS Heavy Panzer Battalion 101 arrived next to protect the left wing of the I SS Panzer Corps. The 1 SS arrived towards the end of the month with lead elements becoming embroiled in the British offensive Operation Epsom. The only other Waffen-SS unit in France at this time was the 2 SS Das Reich, in Montauban, north of Toulouse. They were ordered north to the landing beaches and on 9 June were responsible for the Tulle massacre, where 99 men were murdered. The next day, they reached Oradour-sur-Glane where they massacred 642 French civilians. The II SS Panzer Corps, consisting of the 9th SS Hohenstaufen and 10th SS Frundsberg divisions and the SS Heavy Panzer Battalion 102, was transferred from the Eastern Front to spearhead an offensive to destroy the Allied beachhead. However, the British launched Operation Epsom and the two divisions were fed piecemeal into the battle, and launched several counterattacks over the following days. Without any further reinforcements in men or materiel, the Waffen-SS divisions could not stop the Allied advance. 1 SS Leibstandarte and 2 SS Das Reich took part in the failed Operation Lüttich in early August. The end came in mid August when the German Army was encircled and trapped in the Falaise pocket, including the 1 SS , 10 SS Frundsberg and 12 SS Hitlerjugend and the 17 SS Götz von Berlichingen, while the 2 SS Das Reich and the 9 SS Hohenstaufen were ordered to attack Hill 262 from the outside in order to keep the gap open. By 22 August, the Falaise pocket had been closed, and all German forces west of the Allied lines were dead or in captivity. In the fighting around Hill 262 alone, casualties totalled 2,000 killed and 5,000 taken prisoner. The 12 SS Hitlerjugend had lost 94 per cent of its armour, nearly all of its artillery, and 70 per cent of its vehicles. The division had close to 20,000 men and 150 tanks