Provisional Bn and became 30th (City of London) Battalion, London Regiment. By March 1917 the battalion was at Colchester. On 5 February 1918 it transferred to 226th Mixed Bde at Walton-on-the-Naze, where it remained until the end of the war. The battalion was disbanded on 5 April 1919. Interwar The TF was reconstituted on 7 February 1920 and the battalion reformed at Harrow Road. The TF was reorganised as the Territorial Army (TA) the following year. The London Regiment had fallen into abeyance on 7 July 1916 and the battalions were treated as independent regiments affiliated to their original parent regiments, so the battalion was now designated 3rd City of London Regiment (The Royal Fusiliers). The London Regiment was formally disbanded in 1937, when the battalion became the 10th (3rd City of London) Battalion, The Royal Fusiliers (City of London Regiment). In 1935, the increasing need for anti-aircraft (AA) defence, particularly for London, was addressed by converting the 47th (2nd London) Division into the 1st Anti-Aircraft Division. A number of London battalions were subsequently converted to the AA role, the 3rd Londons becoming a searchlight (S/L) unit on 1 November 1938 with 69th Searchlight Regiment added to its title and the following organisation: 10th (3rd City of London) Battalion, The Royal Fusiliers (69th Searchlight Regiment) Battalion HQ at Harrow Road, Paddington 456th S/L Company 457th S/L Company 458th S/L Company The unit formed part of 40th Anti-Aircraft Brigade in 2nd AA Division. World War II Mobilisation The TA's AA units were mobilised on 23 September 1938 during the Munich Crisis, with units manning their emergency positions within 24 hours, even though many did not yet have their full complement of men or equipment. The emergency lasted three weeks, and they were stood down on 13 October. In February 1939, the existing AA defences came under the control of a new Anti-Aircraft Command. In June, a partial mobilisation of TA units was begun in a process known as 'couverture', whereby each AA unit did a month's tour of duty in rotation to man selected AA and searchlight positions. On 24 August, ahead of the declaration of war, AA Command was fully mobilised at its war stations. Battle of Britain and Blitz On 1 August 1940, all Army S/L units were transferred to the Royal Artillery (RA), and the battalion became 69th (3rd City of London) Searchlight Regiment, RA, though retaining its