The Infantry prior to the 1957 Defence Review, the British Army consisted of single-battalion regiments grouped in administrative "brigades", consisting of anywhere from two to seven battalions, such as Guards Brigade, Lowland Brigade, but no Brigade for Light Infantry.
Following the Defence Review announced in 1957, the majority of regular infantry of the British Army consisted of single-battalion regiments grouped in administrative "brigades", consisting of anywhere from two to seven battalions. 
