Operation Undertone

Part of the Western Front of World War II

Date	15–24 March 1945
Location	75 km sector between Saarbrücken and Hagenau
Result	Allied victory

Belligerents

United States

France

Germany

Commanders and leaders

Jacob L. Devers

Paul Hausser

Casualties and losses

12,887 (est.)

22,000 (POW)

German casualties do not include KIA, WIA, or those inflicted by U.S. Third Army. Allied casualties are for the U.S. Seventh Army (12,000) and French TF de Monsabert (887).

Operation Undertone was a large assault by the U.S. Seventh and French 1st Armies of the U.S. Sixth Army Group as part of the Allied invasion of Germany in March 1945 during World War II.

A force of three corps was to attack abreast from Saarbrücken, Germany, along a 75 km sector to a point southeast of Hagenau, France. A narrow strip along the Rhine leading to the extreme northeastern corner of Alsace at Lauterbourg was to be cleared by a division of the French 1st Army under operational control of the Seventh Army. The Seventh Army′s main effort was to be made in the center up the Kaiserslautern corridor.

In approving the plan, Supreme Allied Commander General Dwight D. Eisenhower asserted that the objective was not only to clear the Saar-Palatinate but to establish bridgeheads with forces of the Sixth Army Group over the Rhine between Mainz and Mannheim. The U.S. Third Army of the 12th Army Group was to be limited to diversionary attacks across the Moselle to protect the Sixth Army Group′s left flank.

Opposing commanders were U.S. General Jacob L. Devers, commanding U.S. Sixth Army Group and German SS General Paul Hausser, commanding German Army Group G.

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