12thFoot raised in 1685 as the Duke of Norfolk's Regiment, became the East Suffolk Regiment in 1782.

There is a museum in Bury St. Edmunds and the Colours are laid up in St Mary's Church, Bury St. Edmunds.

In 1959 the regiment amalgamated with The Royal Norfolk Regiment to form The 1st East Anglian Regiment, in 1964 this became the 1st Battalion, The Royal Anglian Regiment, which wears the castle and key as its cap badge.

Battle Honours WW1 - 22 Battalions
Mons, Le Cateau, Retreat from Mons, Marne 1914, Aisne 1914 '18, La Bassée 1914, Givenchy 1914, Neuve Chapelle, Ypres 1915 '17 '18, Gravenstafel, St. Julien, Frezenberg, Bellewaarde, Aubers, Hooge 1915, Loos, Somme 1916 '18, Albert 1916 '18, Bazentin, Delville Wood, Pozières, Flers-Courcelette, Morval, Theipval, Le Transloy, Ancre Heights, Ancre 1916 '18, Arras 1917 '18, Scarpe 1917 '18, Arleux, Pilckem, Langemarck 1917, Menin Road, Polygon Wood, Poelcappelle, Passchendaele, Cambrai 1917 '18, St. Quentin, Bapaume 1918, Lys, Estaires, Messines 1918, Hazebrouck, Bailleul, Kemmel, Béthune, Scherpenberg, Amiens, Hindenburg Line, Épéhy, Canal du Nord, Courtrai, Selle, Valenciennes, Sambre, France and Flanders 1914-18, Struma, Doiran 1918, Macedonia 1915-18, Suvla, Landing at Suvla, Scimitar Hill, Gallipoli 1915, Egypt 1915-17, Gaza, El Mughar, Nebi Samwil, Jerusalem, Tell 'Asur, Megiddo, Sharon, Palestine 1917-18

Battle Honours WW2
Dunkirk 1940, Normandy Landing, Odon, Falaise, Venraij, Brinkum, North-West Europe 1940 '44-45, Singapore Island, Malaya 1942, North Arakan, Imphal, Burma 1943-45

The Suffolk Regimental Museum, Bury St Edmunds (Army Museums Ogilby Trust)

Deployment
1st Battalion

1881.07.01 1st Battalion, The Suffolk Regiment
1881 Bengal
<1885> Roorkee
<1888> Hazara
<1892> Jhansi
1892 England: Colchester
<1897> England: Aldershot
<1899> England: Dover
1899.11 South Africa
1902 England: Colchester
1904 Woolwich
1907 Malta
1911 Egypt
1914 Sudan
1915.01 France and Flanders 28 Div
1915.11 Macedonia
1919 India: Madras/Jubbulpore
1924 Gibraltar
1927 England: Bury St Edmunds
1931 Blackdown 6 Bde
1935 England: Plymouth 8 Bde
1937.11 Malta
1939.07 England: Plymouth 8 Bde
1939.09 France & Belgium 3 Inf Div, BEF
1940.06 UK
1944.06 NW Europe
1945 Palestine
1947 Egypt ?
1948.08.25 amalgamated with 2nd Battalion without change of title
1949.07 Malaya
1953.01 Trieste
1954 UK
1955.09 Cyprus
1959? UK
1959.08.29 amalgamated with 1st Bn, The Royal Norfolk Regiment, to form 1st Bn, 1st East Anglian Regiment (Royal Norfolk and Suffolk)

2nd Battalion

1881.07.01 2nd Battalion, The Suffolk Regiment
1881 Jersey
1882 Ireland: Cork
1888 England: Aldershot
1889 Egypt
1891 India: Madras
1894 Secunderabad
1895 Burma: Rangoon
1898 India: Quetta
1902 Karachi
1904 Madras
1906 Aden
1907 England: Parkhurst
1910 England: Aldershot
1913 Ireland: Curragh
1914.08 France and Flanders 5 Div
1914.09 France and Flanders 3 Div
1919 Ireland: Curragh
1923 England: Colchester 11 Bde
1927 Gibraltar
1927 China
1929.01 India: Secunderabad
1930 Trimulgherry
1933 Madras
1936 Mhow
1937 Bombay
1937 NW Frontier
1939 Razmak
1943.07 Burma
1944.09 Burma LofC
1945 India
1947 UK
1948.08.25 amalgamated with 1st Battalion