Allied Forces Cross the Roer River through Operation Grenade

The U. S. Breakthrough Begins with the Crossing of the Roer: The Ninth Army's crossing of the Roer was a short, violent struggle against the Germans and the river. Forty-five minutes after the night barrage had begun, assault boats and amphibious tractors started across in a great wave. In some of the boats were combat engineers, ferrying cables to moor their pontoon bridges in midstream.

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