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Operation Undertone
Part of the Western Allied invasion of Germany in the Western Front of the European theatre of World War II
Date
8–24 March 1945
Location
sector from Luxembourg to Alsace
Result
Allied victory
Belligerents
United States France
Germany
Commanders and leaders
Jacob L. Devers Omar Bradley Jean de Lattre de Tassigny
Paul Hausser
Casualties and losses
17,220
3,540 killed[1]
22,000 ~
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).[2]
v
t
e
Western Allied invasion of Germany
Blackcock
Rhineland
Veritable
Grenade
Blockbuster
Plunder
Flashpoint
Varsity
Archway
Lumberjack
Remagen
Cologne
Gisela
Undertone
Aschaffenburg
TF Baum
Frankfurt
Ruhr
Paderborn
Würzburg
Kassel
Heilbronn
Howard
Dortmund
Friesoythe
Nuremberg
Lippach
Düsseldorf
Stuttgart
Hamburg
Itter Castle
Logistics
American
British
Operation Undertone, also known as the Saar-Palatinate Offensive, was a large assault by the U.S. Seventh, Third, and French First Armies of the Sixth and Twelfth Army Groups 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-kilometre (47 mi) 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 First 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 Twelfth 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.
Significantly assisted by operations of the Third Army that overran German lines of communication, Operation Undertone cleared Wehrmacht defenses and pushed to the Rhine in the area of Karlsruhe within 10 days.[3] General Devers′ victory—along with a rapid advance by the U.S. Third Army—completed the advance of Allied armies to the west bank of the Rhine along its entire length within Germany.
The bulk of the text in this article is taken directly from The Last Offensive, a work of the U.S. Army that is in the public domain. The material was extracted from Chapter XII, The Saar-Palatinate, pp. 236–265.
^“Warfare and Armed Conflicts: A Statistical Encyclopedia of Casualty and Other Figures, 1492–2015, 4th Ed.” page 480
^Grandes Unités Françaises, Vol. V-3, p. 338
^The Last Offensive, Chapter XII, pp. 236-265
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