page_title: 133rd Light Anti-Aircraft Regiment, Royal Artillery
section_title: Overlord
hierarchical_section_title: 133rd Light Anti-Aircraft Regiment, Royal Artillery / Overlord
caption_attribution_description: English: The crew of a Bofors anti-aircraft gun view vapour trails in the sky high above the Dutch-German border near Brunssum, 25 December 1944. The crew of a Bofors anti-aircraft gun view vapour trails in the sky high above the Dutch-German border near Brunssum, 25 December 1944.
context_page_description: The 133rd Light Anti-Aircraft Regiment, was an air defence unit of Britain's Royal Artillery during World War II. It saw action during the campaign in North West Europe, defending the vital port of Antwerp against V-1 flying bombs and supporting the advance into Germany.
context_section_description: The regiment left AA Command in February–March 1943 and joined 74th AA Brigade under War Office control. 74th AA Brigade was one of the mobile formations created to support 21st Army Group in the Operation Overlord planned invasion of Normandy.
  For the next year, 133rd LAA Rgt trained for Overlord with 74th AA Bde. LAA regiments at this time comprised three batteries of three troops, each equipped with six towed Bofors 40 mm guns using Stiffkey Stick sights. As a mobile unit, 133rd would also have had a Royal Electrical And Mechanical Engineers (REME) workshop and a detachment of the Royal Corps of Signals.
  74th AA Brigade landed in Normandy in August 1944 to join First Canadian Army. At the end of the month, 21st Army Group broke out from the Normandy beachhead and began to pursue the defeated German troops across Northern France. In the last days of the month, 74th AA Bde's LAA regiments were deployed to guard the crossings of the River Seine.
caption: A British Bofors LAA gun, winter 1944–45.
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