Operation Diadem order of battle is a listing of the significant formations that were involved in the fighting on the Winter Line and at the Anzio bridgehead south of Rome during Operation Diadem in May - June 1944 which resulted in the Allied breakthrough at Cassino and the breakout at Anzio leading to the capture of Rome.
C-in-C: General Sir Harold Alexander
Chief of Staff: Lieutenant-General Sir John Harding
Commander:
Lieutenant General Mark W. Clark
Major General Lucian K. Truscott
U.S. 3rd Infantry Division (Brigadier General John W. O'Daniel) until 25 May 1944
British 1st Infantry Division (Major-General John Hawkesworth)
U.S. 45th Infantry Division (Major General William W. Eagles)
U.S. 1st Armored Division (Major General Ernest N. Harmon)
U.S. 34th Infantry Division (Major General Charles W. Ryder)
U.S. 36th Infantry Division (Major General Fred L. Walker) (from 18 May 1944)
British 5th Infantry Division (Major-General Philip Gregson-Ellis)
First Special Service Force (3 regiments of two battalions each) (Brigadier General Robert T. Frederick)
Major-General Geoffrey Keyes
U.S. 88th Infantry Division (Major General John E. Sloan
U.S. 85th Infantry Division (Major General John B. Coulter)
1st U.S. Armored Group (three tank battalions)
U.S. 3rd Infantry Division (Brigadier General John W. O'Daniel) (from 25 May)
Général d'armée (General) Alphonse Juin
3ème Division d'Infanterie Algérienne (3rd Algerian Infantry Division) (Général de division (Major-General) Joseph de Goiselard de Monsabert)
4ème Division Marocaine de Montagne (4th Moroccan Mountain Division) (Général de division (Major-General) François Sevez)
2ème Division d'Infanterie Marocaine (2nd Moroccan Infantry Division) (Général de division(Major-General) André W. Dody)
1ère Division Française Libre/1ère Division Motorisée d'Infanterie 1st Motorised Infantry Division) (Général de division (Major-General) Diego Brosset)
Commandement des Goums Marocains (Command of Moroccan Goumiers - Three Groups of Tabors each comprising three tabors of 500 to 800 men) (Général de brigade (Brigadier-General) Augustin Guillaume)
Corps Troops
7ème et 8ème Régiments de Chasseurs d'Afrique (7th and 8th African Light Cavalry Regiment) (M10 tank destroyers)
Régiment d'Artillerie Coloniale du Levant (Levant Colonial Artillery Regiment)
64ème Régiment d'Artillerie d'Afrique (64th African Artillery Regiment)
Groupe de canonniers-marins (Navy Artillery Battalion - two batteries)
H.Q. U.S. IV Corps
U.S. 36th Infantry Division (Major-General Fred L. Walker) (from 18 May 1944)
Commander:
Lieutenant-General Sir Oliver Leese
Lieutenant-General Sidney C. Kirkman
British 4th Infantry Division (Major-General Dudley Ward)
British 6th Armoured Division (Major-General Vyvyan Evelegh)
8th Indian Infantry Division (Major-General Dudley Russell)
British 78th Infantry Division (Major-General Charles Keightley)
1st Canadian Armoured Brigade (Brigadier W. C. Murphy)
Lieutenant-General E. L. M. Burns
1st Canadian Infantry Division (Major-General Chris Vokes)
5th Canadian Armoured Division (Major-General Bert Hoffmeister)
British 25th Army Tank Brigade (Brigadier J.N. Tetley)
Lieutenant-General Władysław Anders
Polish 3rd Carpathian Rifle Division (Major-General Bolesław Bronisław Duch)
Polish 5th Kresowa Infantry Division (Major-General Nikodem Sulik)
Polish 2nd Armoured Brigade (Brigadier-General Bronislaw Rakowski)
Lieutenant-General Sir Richard L. McCreery
2nd New Zealand Division (Lieutenant-General Sir Bernard Freyberg)
British 24th Guards Brigade (Brigadier A.F.L. Clive)
British 2nd Parachute Brigade (Brigadier C.H.V. Pritchard)
12th South African Motorised Brigade (Brigadier R.J. Palmer)
Italian Corps of Liberation (Six battalions and a regiment of artillery) (General Umberto Utili)
6th South African Armoured Division (Major-General Evered Poole)
Lieutenant-General Charles Allfrey
4th Indian Infantry Division (Major-General Arthur Holworthy)
10th Indian Infantry Division (Major-General Denys Reid)
British 23rd Armoured Brigade (Brigadier R.H.E. Arkwright)
Commander:
Field Marshal Albert Kesselring
German 92nd Infantry Division (Major-General Werner Goeritz) (Tiber Coastal Command)
Hermann Göring Panzer Division (Brigadier-General Wilhelm Schmalz) (in OKW Reserve)
German 29th Panzergrenadier Division (Lieutenant-General Walter Fries)
German 26th Panzer Division (Lieutenant-General Smilo Freiherr von Lüttwitz)
German 90th Panzergrenadier Division (Major-General Ernst-Günther Baade)
Commander: Lieutenant-General Eberhard von Mackensen (until end May 1944, then under direct command of Kesselring)
Lieutenant-General Alfred Schlemm
German 4th Parachute Division (Major-General Heinrich Trettner)
65th Infantry Division (Major-General Hellmuth Pfeifer)
3rd Panzergrenadier Division (Brigadier-General Hans Hecker to 1 June then Major-General Hans-Günther von Rost to 25 June then Major-General Walter Denkert)
Lieutenant-General Traugott Herr
German 362nd Infantry Division (Major-General Heinz Greiner)
German 715th Infantry Division (Major-General Hans-Georg Hildebrandt)
Commander: General Heinrich von Vietinghoff
Lieutenant-General Frido von Senger und Etterlin (on leave 17 April to 17 May during which time Lieutenant-General Otto Hartmann)
15th Panzergrenadier Division (Major-General Rudolf Sperl)
German 71st Infantry Division (Major-General Wilhelm Raapke)
German 94th Infantry Division (Major-General Bernhard Steinmetz)
Lieutenant-General Valentin Feurstein
German 44th Reichsgrenadier Division Hoch und Deutschmeister (Major-General Bruno Ortner)
German 1st Parachute Division (Lieutenant-General Richard Heidrich)
German 114th Jäger Division (Major-General Alexander Bourquin to 19 May 1944 then Major-General Hans Boelsen)
German 5th Mountain Division (Major-General Max-Günther Schrank)
Major-General Friedrich-Wilhelm Hauck
German 305th Infantry Division (Lieutenant-General Friedrich-Wilhelm Hauck)
German 334th Infantry Division (Major-General Hellmuth Böhlke)
Commander: Lieutenant-General Gustav von Zangen
Lieutenant-General Anton Dostler
356th Infantry Division (Major-General Egon von Neindorff until 15 May then Major-General Karl Faulenbach)
162nd Turkoman Division (Major-General Oskar von Niedermayer)
Lieutenant-General Joachim Witthöft
188th Mountain Division (Major-General Hans von Hößlin)
278th Infantry Division (elements) (Major-General Harry Hoppe)
Lieutenant-General Ludwig Kübler
278th Infantry Division (most of) (Major-General Harry Hoppe)
