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Crossing the Po River, April 1945
Po River, April 1945
bigpigeon.us webpage WWII Germany > The MTO > Northern Italy > Op. Grapeshot, Spring 1945, © 2026 by Robert A. Christiansen, updated 31 Dec 2025

​​Operation Grapeshot, known in US Army history as the Po Valley Campaign, was the final Allied WWII campaign in Italy. It officially began on 9 Apr 1945 and combat ended with the German surrender in Italy on 2 May 1945.

About this Webarea

On-line documentation for Operation Grapeshot is sketchy and the official US Army history even contains some errors. Thus I am providing a fuller summary than usual herein.
Axis forces had prepared defense lines along the Po and Adige Rivers. Neither line held up the Allied advance during Operation Grapeshot.

Operation Grapeshot - The Military Context

The Allied advance northward in Italy stalled, in October 1944 for the US Fifth Army and then in December for the British Eighth Army. Operations were shut down due to stiff German resistance, mud, and general exhaustion. In early April 1945 the Allied front lines had remained nearly unchanged for three months for the Eighth Army and five months for the Fifth Army.
  • Major components of the US Fifth Army were near the northern edge of the Northern Apennines, in places almost within sight of Bologna
  • The British Eighth Army lay on the Romagna Plains in the Faenza and Ravenna areas, blocked by the Senio River and, near the Adriatic, the lower Reno River.​
Picture
Shown in blue, the winter 1944–45 line in northern Italy (The line changed little before April, although the Allied units did change considerably.)
Scalable Version
The Front Line, 1 April 1945
The Front Line, 1 April 1945 (the dashed line)
Full Scalable Version
At the beginning of April 1945:
  • Allied forces were now rested and had robust logistical support. However, some Allied combat units had been withdrawn from the 15th Army Group and sent to the ETO and to Greece. Seventeen divisions remained, along with a number of smaller combat units, most of which are not listed below.
  • Axis logistical support was failing, due to demands on other fronts and the impact of Allied air power on lines of communication.

Operation Grapeshot - The Allied Plan

Operation Grapeshot called for a series of coordinated attacks. (See the preceding map.)
  • First the British Eighth Army would attack northwest from the area between Faenza and Ravenna.
  • Then the US Fifth Army would attack north along and west of the highways which enter Bologna from a southerly direction.
  • Once the Allies broke through the German defenses shown as the Genghis Khan Line, they would encircle remaining Axis front-line troops, advance to the Po River, and continue onward.
  • British Eighth Army's advance units would dash for Trieste in extreme northeastern Italy.
  • US Fifth Army would seal off Alpine passes, thus preventing German retreat into the Alps.
Po Valley Campaign as of 20 April 1945
The Po Valley Campaign as of 20 April 1945
Full Scalable Version
Unlike most military operations of such a large scope, Operation Grapeshot was generally implemented according to plan.
Sources for Big Pigeon's WWII Germany > The MTO > Northern Italy > Op. Grapeshot, Spring 1945 webpage:General Sources for this webpage (CMH = US Army Center for Military History)
  • Po Valley: 5 April-8 May 1945, by Thomas Popa, 26 pp. [CMH #72-33]
  • Cassino to the Alps, by Ernest F. Fisher Jr., 1989, 584 pp. [CMH #6-4] (RAC: There appear to be several errors in the latter chapters.)
  • The Final Campaign across Northwest Italy, 14 April–2 May 1945, Headquarters, IV Corps U.S. Army Italy, 1945, 119 pp. with following maps, https://mtmestas.com/pdfs/finalcampaign.pdf
  • http://www.historyofwar.org/articles/operation_grapeshot_spring_offensive.html
  • http://www.historyofwar.org/articles/operation_buckland_argenta.html
  • http://www.historyofwar.org/articles/operation_craftsman_bologna.html
Other Sources:​

Additional Photos