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Northern Italy pages: Rome to the Arno OrBat, Rome to the Arno Op. Olive, Fall 1944
OrBat, Op. Olive Fifth Army, Fall 1944 Fifth Army, Winter 1944–45 Op. Grapeshot, 1945
OrBat, Op. Grapeshot Breakthrough, 1945 To the Po Past the Po
––––––––––––––––––––– MTO – Rome to the Arno ––––––––––––––––––––––––––––
bigpigeon.us webpage WWII Germany > The MTO > Northern Italy > Rome to the Arno, © 2026 by Robert A. Christiansen, updated by RAC 31 Dec 2025
After the Axis withdrawal from Rome, the Allies advanced northward, liberating most of central Italy in the summer of 1944.
After the Axis withdrawal from Rome, the Allies advanced northward, liberating most of central Italy in the summer of 1944.
- As was usually the case during WWII combat on the Italian peninsula, the US Fifth Army advanced on the left, the British Eighth Army on the right, with both armies under control of the 15th Army Group.
- This webpage covers the final part of the US Army's Rome - Arno Campaign, from early June 1944 to 9 September 1944. See Naples to Rome webpages for earlier stages of this campaign, from January to early June of 1944.
The Italian Campaign Timeline, May–September 1944:
- May - The Allies broke through the Gustav Line and broke out of the Anzio Beachhead.
- 4 Jun - Axis forces abandoned Rome.
- 7 Jun - US 34th Division captured port of Civitavecchia.
- 9 Jun - US 1st Armored Division captured Viterbo.
- 18 Jul - the Polish Corps captured the port city of Ancona on the Adriatic.
- 18 Jul - first US Fifth Army units reach the Arno River.
- 19 Jul - The US 442nd Regimental Combat Team captured the port city of Leghorn (pronounced as Ligorno) on the Mediterranean.
- 2 Aug - Fifth Army forces captured the badly damaged city of Pisa.
- 5 Aug - The first Allied troops entered Florence.
- 7 Aug - The last German troops left Florence.
- 25 Aug - Operation Olive, the Allies fall 1944 offensive, began in Eighth Army sector.
- 31 Aug - German Army withdrew from Arno River line.
- 2 Sep - Fifth Army fully crosses the Arno River.
:::::::::::::::::::::::::::::::::::::::::: The Allies' Central Italy Campaign, Summer of 1944 ::::::::::::::::::::::::::::::::::::::::::
After the German army abandoned Rome in early June 1944, Allied forces comprising the US Fifth Army and British Eighth Army followed the retreating Axis forces north through central Italy until early August 1944.
Upon several occasions, the German Army temporarily stopped the Allied advance at improvised defensive lines, the most significant of which are shown on the accompanying map:
The advance stalls:
Logistics issues:
Lengthening supply lines contributed to the slower than expected summer Allied advance through central Italy in. The Allies coveted the ports of Leghorn (Livorno) on the Mediterranean and Ancona on the Adriatic. Both were captured in mid-July, but the port of Leghorn had been devastated both by Allied bombing and German explosives
The Fifth Army generally advanced two corps abreast (some dates are approximate). (draft)
After the German army abandoned Rome in early June 1944, Allied forces comprising the US Fifth Army and British Eighth Army followed the retreating Axis forces north through central Italy until early August 1944.
Upon several occasions, the German Army temporarily stopped the Allied advance at improvised defensive lines, the most significant of which are shown on the accompanying map:
- The Transimeno Line through Lake Transimento from 20 June to 2 July.
- The Arno Line following the Arno River.
The advance stalls:
- After destroying all bridges in Florence except for the Ponte Vecchio, the German army began withdrawing from the Florence area around 11 August as partisans in Florence launched an uprising.
- In early and mid August, portions of the British Eighth Army, especially the Canadian Corps, moved east towards the Adriatic Sea to prepare for Operation Olive, the Allied offensive against the Gothic Line.
Logistics issues:
Lengthening supply lines contributed to the slower than expected summer Allied advance through central Italy in. The Allies coveted the ports of Leghorn (Livorno) on the Mediterranean and Ancona on the Adriatic. Both were captured in mid-July, but the port of Leghorn had been devastated both by Allied bombing and German explosives
The Fifth Army generally advanced two corps abreast (some dates are approximate). (draft)
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On the Fifth Army left:
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On the Fifth Army right:
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The Allied Advance from Rome to Florence - Summer 1944
(I have been unable to find a suitable scalable version of this map.)
██ Pottawattamie Area WWII Dead - WWII Germany > The MTO > Northern Italy > Rome to the Arno ██
- Taken from the bigpigeon.us WWII Dead module.
† O'Connell, John Francis, SN 20-706-814, US Army, Cass Co.
- first served w/ Co. M. (Red Oak), 168th Inf. Regt., 34th Inf. Div.; in 1944 transferred to Co. L, 133rd Inf. Regt., 34th Inf. Div., II Corps, Fifth Army; KIA 9 Jul 1944 near Castellina, Tuscany, Italy, south of Florence.
- WWII Germany > The MTO > Northern Italy > Rome to the Arno
- Co. B, 755th Tank Bn., Fifth Army; KIA 12 Jun 1944 near Latera, Lazio, Italy, NW of Viterbo, supporting French forces.
- WWII Germany > The MTO > Northern Italy > Rome to the Arno
█ Sources for Big Pigeon's WWII Germany > The MTO > Northern Italy > Rome to the Arno webpage █
- The webpage header image, Tuscany Summer 1944, shows German prisoners of the Japanese-American 442nd Regimental Combat Team during the drive from Rome to the Arno River at Florence.
- Cassino to the Alps (scalable maps) (United States Army in World War II, Mediterranean Theater of Operations series, Ernest F. Fisher Jr., 1989, CMH #6-4) - http://www.ibiblio.org/hyperwar/USA/USA-MTO-Cassino/index.html.
- https://www.historyofwar.org/articles/battles_arezzo_line.html#google_vignettehttps://www.historyofwar.org/articles/battles_arno_line.html#google_vignette
- The Allied Advance from Rome to Florence - Summer 1944 map is courtesy of the US Army Center for Military History. (http://www.lib.utexas.edu/maps/historical/rome-arno_river_1944.jpg – Rome-Arno – Rome to the Arno River, 5 June – 5 August 1944 From p. 29 of the Rome-Arno Campaign Brochure by Clayton D. Laurie (194K)
