, Field Marshal Haig attacked the German lines from near Albert south to Braches, on the Avre above Montdidier, with forces that included not only British, French, and Australian troops but also Canadians who had been brought up suddenly from the vicinity of Lens. The enemy, taken by surprise, were thrust back along almost the entire front of twenty-five miles, and this resulted in the capture by the Allies of over a hundred guns and more than 10,000 prisoners. The advance was between four and five miles, and at one point seven miles.
The British launched their attack in a mist, after only a few minutes of artillery preparation, and the Germans were overwhelmed in the first onrush. The British won their objectives with only nominal losses. Of an entire army corps only two officers and fifteen men of the ranks were reported as casualties. The heavy mist in the early morning when the Allies advanced favored their plans, for not until 8 o'clock did a German aeroplane appear over the line and by that time