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 ​bigpigeon.us webpage WWII Germany > The MTO > Italy, Summary & Sources, © 2026 by Robert A. Christiansen, updated by RAC 30 Dec 2025

Ground combat in Italy began with the Allied invasion of Sicily in July 1943 and continued until May 1945.​
I treat ground combat in Italy as consisting of four chronological stages (see the second map): Notes:
  • Some pages are incomplete.
Physical Map of Italy
Physical Map of Italy
Sicily to Naples Timeline, July–October 1943:
  • May - All Italian and German forces surrender in Tunisia.
  • 9 July - British and US forces based in North Africa invade the Italian island of Sicily.​
  • 17 August - The Allied campaign to capture Sicily ends with the capture of Messina after Axis forces withdraw to the Italian mainland.
  • ​3 September - First Allied landing on the Italian mainland: British at Calabria across from Messina.
  • 9 September - Additional Allied landings on the Italian mainland: British at Taranto and Brits & Americans at Salerno.
  • 1 October - US Fifth Army occupy Naples on the west coast and British Eighth Army occupy Foggia area near the east coast.

Naples to Cassino & Anzio, October 1943–June 1944:
  • October 1943–January 1944 - Allies advance through the Winter Line area and reach the Gustav Line.
  • January–May 1944 - Bloody Gustav Line battles in the Cassino area.
  • January–May 1944 - Allied beachhead invasion at Anzio followed by four months of stalemate.
​
Cassino & Anzio to Rome, October 1943–June 1944:
  • May 1944 - Allies breakthrough the Gustav Line, including the Cassino area
  • May 1944 - Allies breakthrough the Hitler Line, which backed up the Gustav Line
  • May 1944 - Allies breakout of the Anzio Beachhead.
  • May 1944 - Allies breakthrough the Caesar C Line protecting Rome. 
  • June 1944 -  Axis forces abandon Rome and retreat northward.

Northern Italy, June 1944–May 1945:
  • June–August  - Allies advance northward in Italy to Arno River.
  • August 1944–April 1945 - Moderate gains by Allies past Gothic Line with significant casualties.
  • April–May 1945 - Allies breakthrough German lines, advance across the Po Valley and begin to penetrate the Italian Alps.
The Allied Campaign in Italy
The Italian Campaign in Sicily and the Mainland
Regions of Italy
Regions of Italy
::::::::::::::::: Concordance between the US Italian campaigns and their treatment in Big Pigeon ::::::::::::::::::
  • ​In the following concordance, I break the Naples-Foggia campaign into three phases and the Rome-Arno campaign into four phases.
 ​The six official US ground campaigns in Italy:

​1 - Sicily: 9 July–17 August 1943, from the Allied invasion of the Italian island of Sicily (Operation Husky) through the Axis withdrawal across the Straits of Messina

2 - Naples-Foggia: 9 September 1943–21 January 1944, from the Allied landings on the Italian mainland at Salerno south of Naples (Operation Avalanche) to the Allied arrival at the Gustav Line in the Cassino area.

3 - Anzio: 22 January–24 May 1944, from the Allied landings at Anzio south of Rome (Operation Shingle) through protracted battles to the Anzio Breakout.

4 - Rome–Arno: 22 January–9 September 1944, from the Gustav Line battles near Cassino through Rome to the arrival at the Arno River Line


​5 - Northern Apennines: 10 September 1944–4 April 1945; fromOperation Olive, the Gothic Line breakthrough, through subsequent battles in or near the northern Apennine Mountains
​
6 - Po Valley: 5 April–8 May 1945: Operation Grapeshot, the 1945 Allied spring offensive into the plains of northern Italy
Coverage in Big Pigeon's WWII > The MTO:

Sicily to Naples > Sicily



​
Sicily to Naples > Salerno-Naples
Naples to Rome > The Volturno Line
Naples to Rome > The Bernhardt Line

​
​Naples to Rome > Anzio

​
​
Naples to Rome > The Gustav Line/Cassino #1
Naples to Rome > Cassino #2 and #3
Naples to Rome > Cassino to Rome
Northern Italy > Rome to the Arno

Northern Italy > Op. Olive, Fall 1944
Northern Italy > Fifth Army, Fall 1944
Northern Italy > Fifty Army, Winter 1944–45


Northern Italy > Breakthrough
Northern Italy > To the Po
Northern Italy > Past the Po
     ██  Sources for Big Pigeon's WWII Germany > The MTO > Italy - Summary and Sources webpage  ██
                           ██  Sources for Big Pigeon's WWII Germany > The MTO > Italy webarea  ██

+++ Wikipedia's Italian campaign webpages +++ 
+++ Official US Army Italian campaign histories for Italy +++

US Army Center for Military History campaign brochures for WWII campaigns in Italy:​​​ ​Links to maps from the above brochures. Generally not high resolution. Maps that belong elsewhere:   ​
​Major US Army Center for Military History histories of WWII in Italy, including links to scalable maps:
Salerno to Cassino, https://www.ibiblio.org/hyperwar/USA/USA-MTO-Salerno/index.html Cassino to the Alps, https://www.ibiblio.org/hyperwar/USA/USA-MTO-Cassino/index.html#index
​+++ Allied campaigns in Italy order of battle webpages +++
Wikipedia order of battle webpages: British military history order of battle webpages:
+++ Maps from West Point Military Academy Dept. of History atlases for the Allied campaigns in Italy +++ 
Other individual Italian campaign maps:​
Other collections of Italian campaign maps:
+++ US WWII not specific to Italy +++
+++ Italy Information not specific to WWII +++
+++ Other books on the Italian campaigns +++ 
Appendix: Extended Family Members Who Served in the Italian Campaign:
  • Roland and Rodney Paulson, my uncle Louis Petersen's nephews, were identical twins from Ames, Iowa who served together on a B-17 flying from the Foggia area. Their squadron used Azon, the Air Force's first guided bomb. Roland, as the lead bombardier, once disabled the Avisio viaduct on the main German supply line to Italy for several days.
  • Ralph Shower of Terre Haute, Indiana, my wife's uncle, was a member of a port battalion stationed in Naples. Companies from his battalion would load ships in Naples, and then accompany the ships to the Anzio beachhead, where the ships would unload, while sometimes under fire.
  • Ralph Edward Spencer, Jr. of Boomer Township, my step-uncle, served with the 3rd Infantry Division in North Africa, Sicily, the Italian mainland, and then in southern France.