By driving eastward from Arras, covered on the left by the rivers Scarpe and Sensee, the First Army would endeavour to turn the enemy's positions on the Somme battlefield and cut his system of railway communications which ran south-westward across their front."
Both made progress, and by the evening had reached the line of the Sensee, between Cherisy and Remy.
22 that that line should be attacked along the whole front from the Sensee to N.
It will then push forward and secure its left on the Sensee river and operate so as to protect the left of the Third Army.
Of the canal the Germans had as successive defensive positions the Marquion trench line, running from Oisy by Marquion to the main Hindenburg line near Graincourt; the Marcoing line, covering Cambrai at a distance of some two miles from its outskirts; and the Scheldt canal, from the Sensee at Estrun by the western suburbs of the city to Marcoing, Creveceeur and the south.
Corps took over the front from the Sensee southwards to the Arras-Cambrai road, and the Canadians relieved the left of the Third Army as far as N.
Again and again to check the Canadian advance by blows against their left front and left from the direction of the confluence of the Sensee and the Scheldt canal.