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bigpigeon.us webpage WWII Germany > MTO > Cassino/Anzio to Rome > Italy OrBat, May '44, © 2025 by Robert A. Christiansen, updated 15 Sep 2025

The Fourth Battle of Monte Cassino was part of Operation Diadem.
​Key Dates: (all 1944)
  • 11 May - Operation Diadem, the Allied breakthrough in central Italy, begins with a massive coordinated attack on the western sector of the Axis Gustav Line.
  • 18 May - Monte Cassino, the Gustav Line linchpin, falls to the Polish Corps.
  • 23 May - Allied breakout from the Anzio Beachhead south of Rome begins.
  • 24 May - Canadian II Corps breaches Hitler/Senger Line, the Axis fall-back position from the Gustav Line.
  • 25 May - Allied forces from the Gustav Line meet Allied Forces from the Anzio Beachhead.
  • 2 Jun - Axis forces begin withdrawing northward from the Rome area.
  • 4 Jun - US Fifth Army occupies Rome.
                                      
                                             ██   Allied Order of Battle - Gustav Line to Rome   ██


    ................................................................... 15th Army Group (Alexander)  ...............................................................   

◼ ​US Fifth Army (Clark)
​ ⏶  Under direct US Fifth Army control:
  • US 36th Infantry Division (Walker) - to US VI Corps and Anzio 22 May 1944
⏶   US II Corps - US Fifth Army's left wing
  • US 85th Infantry Division (Coulter) - entered line 10 Apr 1944 as US II Corp's left wing.
  • US 88th Infantry Division (Sloan) - US II Corps right wing; to US IV Corps 28 May 1944; to US II Corps 1 Jun 1944.
  • US 3rd Infantry Division (O'Daniel) - from US VI Corps 25 May.
​ ⏶  French Expeditionary Corps (Juin) - US Fifth Army's right wing.
  • 4th Moroccan Mountain Division (Sevez)
  • 3rd Algerian Infantry Division (Monsabert)
  • 2nd Moroccan Infantry Division (Dody)
  • 1st Free French Division (Brossert) - arrived Naples, Italy beginning 20 Apr 1944.
​
◼ British Eighth Army (Leese)
​ ⏶  British Eighth Army reserve:
  • ​6th South African Armoured Division (Poole) - arrived Italy 20–21 Apr 1944; to Canadian I Corps 28 May 1944.
​ ⏶  British XIII Corps (Kirkman) - left wing of British Eighth Army.
  • 8th Indian Infantry Division (Russell) - from British V Corps Apr 1944; Diadem assault division.
  • British 4th Infantry Division (Ward) - arrived Italy 21 Feb 1944; Diadem assault division.
  • British 78th Infantry Division (Keightley) - in reserve for several days.
  • British 6th Armoured Division (Evelegh) - arrived Italy from North Africa 18 Mar 1944; perhaps initially in reserve; to XIII Corps 22 Aug 1944.
​ ⏶  I Canadian Corps (Burns) - initially behind British XIII Corps; penetrated Hitler Line 23 May 1944.
  • 1st Canadian Infantry Division (Vokes) - relieved 8th Indian Infantry Division 16 May 1944.
  • 5th Canadian Armoured Division (Hoffmeister)
  • 6th South African Armoured Division (Poole) - from British Eighth Army reserve 28 May 1944; to British XIII Corps Jun 1944; to US IV Corps 22 Aug 1944.
​ ⏶  Polish II Corps (Anders)
  • 3rd Carpathian Infantry Division (Duch) - took Cassino Monastery 18 May 1944.
  • 5th Kresowa Infantry Division (Sulik)
​ ⏶  British X Corps (McCreery)
  • 2nd New Zealand Division (Freyberg) - from New Zealand Corps 26 Mar 1944.
  • 10th Indian Infantry Division (Reid) - from British V Corps 3 Jun 1944.
​ ⏶  British V Corps - on the Adriatic in a holding role
  • 4th Indian Infantry Division (Holworthy) - from New Zealand Corps 26 Mar 1944.
  • 10th Indian Infantry Division (Reid) - to British X Corps 3 Jun 1944.

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