1908 
7th Battalion, The Duke of Cambridge's Own (Middlesex Regiment)
 
Boer War 
 South Africa 1900-02 
 
 The Great War
Four Battalions formed
 
 1914 
1st / 7th Battalion 2nd / 7th Battalion
 
 1915 
3
rd / 7
th Battalion 4
th / 7
th Battalion
1st / 7th Battalion and 1st / 8th Battalion amalgamated (for 8 months)
 
 1916 
1st / 7th Battalion absorbed 2nd / 8th Battalion and 2nd / 7th Battalion 4th / 7th Battalion re-designated 7th (Reserve) Battalion 7th (Reserve) Battalion absorbed 8th , 9th , 10th (Reserve) Battalions
 
 1917 
2nd / 7th Battalion disbanded 15th June 3rd / 7th Battalion re-designated 2nd / 7th Battalion
 
 1919 
1st / 7th Battalion disembodied
 
 
Location of operations
 
1st / 7th Battalion
2nd / 7th Battalion
 
 
Aubers Ridge
Gebel Howilmil
 
 
Battle Honours awarded to The Middlesex Regiment (Duke of Cambridge's Own) attributable to 1st / 7th Battalion:
Aubers, Somme 1916, '18, 
 Albert 1918,  Ginchy, Flers-Courcellette, Morval, Le Transloy, Arras 1917, '18, Scarpe 1917, '18, 
 Ypres 1917  , Langemarck 1917, 
 Cambrai 1917, '18,  Canal du Nord, Sambre, France and Flanders 1914-18 
attributable to 2
nd / 7
th Battalion:
Egypt 1915-17
 
 
 7th Battalion, The Duke of Cambridge's Own (Middlesex Regiment) 
 
 
 7th Battalion, The Middlesex Regiment (Duke of Cambridge's Own) 
 
 1939 
On duplication of the Territorial Army re-designated as:
 
 
 1st / 7th Battalion, The Middlesex Regiment (Duke of Cambridge's Own) 
 
 
 2nd / 7th Battalion, The Middlesex Regiment (Duke of Cambridge's Own) 
 
 WW2 
Location of operations
 
1st / 7th Battalion
2nd / 7th Battalion
 
 1940 
Louvain
Home Defence
 
 
Sousse 
Enfidaville 
Tunis 
Sicily 
Araso
Sicily (Mortar Platoon) 
Francoforte (Mortar Platoon) 
Sferro (Mortar Platoon) 
Salerno
 
 1944 
Normandy 
Bourguebus Ridge 
Falaise
Anzio 
Canroceto 
Rome
 
 
S'Hertogenbosch
Gothic Line
 
 1945 
Groesbeek (with 8th Battalion)
Monte Castellano
 
 
Battle Honours awarded to The Middlesex Regiment (Duke of Cambridge's Own) attributable to:
 
 
1st / 7th Battalion: Dyle  ,  Defence of Escaut, Ypres-Comines Canal,  Dunkirk 1940, Normandy Landing  , Breville, Orne, Troarn, Seine 1944, Le Havre, Lower Maas, Venlo Pocket, Reichswald,  Rhine,  Lingen, Bremen, North West Europe, 1940, '44-45,  El Alamein,  Advance to Tripoli, Mareth,  Akarit,  Djebel Roumana, North Africa 1942-43, Francoforte, Sferro, Sferro Hills,  Sicily 1943 
 
 
2nd / 7th Battalion:  Anzio,  Carroceto, Gothic Line, Monte Grande, Italy 1944-45
 
 
 7th Battalion, The Middlesex Regiment (Duke of Cambridge's Own) 
 
 1960 
Amalgamated with 8th Battalion, The Middlesex Regiment (Duke of Cambridge's Own)
 
 
[formerly: 11th Battalion ( 8th Middlesex), The Parachute Regiment] 571st Light Anti-Aircraft
 
 
Regiment, Royal Artillery ( 9th Battalion, The Middlesex Regiment (Duke of Cambridge's
 
 
[formerly: 595th Light Anti-Aircraft and Searchlight Regiment, Royal Artillery ( 9th Battalion,
 
 
The Middlesex Regiment (Duke of Cambridge's Own))]
 
 
604th (Mixed) Light Anti-Aircraft and Searchlight Regiment, Royal Artillery
 
 
[formerly: 604th Searchlight Regiment, Royal Artillery (Royal Fusiliers)
 
 
69th Searchlight Regiment, Royal Artillery (3rd City of London)
 
 
10th (3rd City of London) Battalion, Royal Fusiliers (City of London Regiment) (69th
 
 
 5th Battalion, The Middlesex Regiment (Duke of Cambridge's Own) 
 
 
 D Company, 5th (Volunteer) Battalion, The Queen's Regiment 
 
 
 A and B Companies, 10th (Territorial) Battalion, The Queen's Regiment (Middlesex) 
 
 1969 
10th (Territorial) Battalion, The Queen's Regiment (Middlesex) was reduced to Cadre role,
 
 1971 
5th (Volunteer) Battalion, The Queen's Regiment
 
 
6th (Territorial) Battalion, The Queen's Regiment (Queen's Surreys)
 
 
The Greater London Regiment, Royal Artillery (Territorials)
 
 
The Surrey Yeomanry (Queen Mary's Regiment), Royal Artillery (Territorials)
 
 
[formerly: 3rd , 6th , 11th , 17th , 19th , 22nd and 23rd Battalions, The London Regiment
 
 
3rd Battalion, The London Scottish ( 97th Anti-Aircraft Regiment)
 
 
4th and 5th Battalions, The Queen's Royal Regiment (West Surrey)
 
 
5th and 6th Battalions, The East Surrey Regiment
 
 
5th , 6th and 7th Battalions, The Essex Regiment
 
 
7th , 8th and 9th Battalions, The Middlesex Regiment (Duke of Cambridge's Own)
 
 
1st , 4th , 6th and 7th London Brigades, Royal Field Artillery
 
 
2nd London Divisional Royal Engineers
 
 
The Surrey Yeomanry (Queen Mary's Regiment)]
 
 
 6th (Volunteer) Battalion, The Queen's Regiment 
 
 1975 
Amalgamated with:
7th (Volunteer) Battalion, The Queen's Regiment [formerly: 4th and 5th Battalions The Buffs (Royal East Kent Regiment) 4th and 5th Battalions, The Queen's Own Royal West Kent Regiment 4th and 5th Battalions, The Royal Sussex Regiment part of The Kent and County of London Yeomanry (Sharpshooters)]
To become:
 6th / 7th (Volunteer) Battalion, The Queen's Regiment
 
1986 
B and D Companies, 6
th / 7
th (Volunteer) Battalion, The Queen's Regiment formed:
 A and B Companies, 8th (Volunteer) Battalion, The Queen's Fusiliers (City of London) 
with: C (City of London) Company, 5th (Volunteer) Battalion, The Royal Regiment of Fusiliers
 
 1993 
A Company, 8
th (Volunteer) Battalion, The Queen's Fusiliers (City of London) reverted to: 6
th / 7
th Battalion, The Princess of Wales's Royal Regiment
(Queen's and Royal Hampshires)
[formerly: 6th / 7th (Volunteer) Battalion, The Queen's Regiment] B and C Companies, 8th (Volunteer) Battalion, The Queen's Fusiliers (City of London) joined with: G (London Scottish) Company, 1st Battalion, The 51st Highland Volunteers D (London Irish Rifles) Company, 4th (Volunteer) Battalion, The Royal Irish Rangers
To form:
 The London Regiment 
organised as: A (London Scottish) Company B (Queen's Regiment) Company C (City of London Fusiliers) Company D (London Irish Rifles) Company HQ (Anzio) Company
 
 1999 
Under the Strategic Defence Review of November 1998  The London Regiment  absorbed two companies: 4th Battalion, The Royal Green Jackets organised as: HQ (Anzio) Company A (London Scottish) Company B (Queen's Regiment) Company C (City of London Fusiliers) Company D (London Irish Rifles) Company F (Royal Green Jackets) Company G (Royal Green Jackets) Company
 
 2007 
F and G (Royal Green Jackets) Companies
moved to join: 7th Battalion, The Rifles leaving HQ and four companies with:
 The London Regiment 
 
 
2017
B (Queen’s Regiment) Company transferred to the 4th Battalion The Princess of Wales’s Royal Regiment with loss of title.