sentences:  6th Guards Tank Brigade (United Kingdom)
  
  The 6th Guards Tank Brigade was an armoured brigade of the British Army during the Second World War formed from the Foot Guards in 1941 as the 6th Guards Armoured Brigade when the United Kingdom was under the threat of invasion and more armoured formations were required.Permission was granted from King George VI and the Colonels of the Regiments involved and, over the summer of 1941, the Infantry of the Guards converted into an armoured formation and the Guards Armoured Division was formed, containing the 5th and 6th Guards Armoured Brigades, together with supporting units.