Key Facts
- Roer crossing date
- 23 February 1945
- German casualties (west Rhine)
- ~90,000 (incl. 50,000 POW)
- Allied casualties
- ~23,000
- Flooding delay
- ~2 weeks due to German dam release
- Commanding U.S. general
- Lt. Gen. William Hood Simpson
Strategic Narrative Overview
Planned for 9 February, the crossing was delayed when German forces opened the sluice gates of upstream Roer dams, flooding the river for nearly two weeks. Allied planners had anticipated this risk but were unable to capture the dams in time. Meanwhile, Hitler refused to allow German commander von Rundstedt to withdraw behind the Rhine, ordering the 15th Army and 1st Parachute Army to hold their positions, further weakening German defenses.
01 / The Origins
By early 1945, Allied forces were advancing toward Germany's western border. The U.S. Ninth Army, operating under Field Marshal Bernard Montgomery's 21st Army Group, was tasked with crossing the Roer River between Roermond and Düren. The operation was designed to coordinate with Operation Veritable, in which the Canadian First Army pushed south from Nijmegen, together forming a pincer movement to clear German forces west of the Rhine.
03 / The Outcome
The Ninth Army successfully crossed the Roer on 23 February 1945. Combined operations Veritable, Blockbuster, and Grenade resulted in approximately 90,000 German casualties west of the Rhine, with over 50,000 taken prisoner. Allied losses totaled around 23,000. The operation effectively cleared German resistance west of the Rhine and marked the beginning of the Allied invasion of Germany proper.
Belligerents & Mobilization Analysis
Side A
2 belligerents
William Hood Simpson, Bernard Montgomery, Harry Crerar.
Side B
2 belligerents
Gerd von Rundstedt, Gustav-Adolf von Zangen, Alfred Schlemm.
Kinetic Engagement Axis
Scroll horizontally to view full axis. Events plotted relatively.