<sod>In December 1941 Brooke succeeded [[Field marshal (United Kingdom)|Field Marshal]] [[Sir]] [[John Dill]] as [[Chief of the General Staff (United Kingdom)|Chief of the Imperial General Staff]] (CIGS), the professional head of the [[British Army]],<ref>{{London Gazette| issue=35397| startpage=7369|date=26 December 1941| supp=y| accessdate=26 March 2009}}</ref> in which appointment he also represented the Army on the [[Chiefs of Staff Committee]]. In March 1942 he succeeded [[Admiral of the Fleet (Royal Navy)|Admiral of the Fleet]] [[Dudley Pound]] as chairman of the Chiefs of Staff Committee,{{sfn|Dear and Foot|2005| pp=131 & 711}} holding both posts until retirement from active service in 1946.<eod>
<sod>In December 1941 Brooke succeeded [[Field marshal (United Kingdom)|Field Marshal]] [[Sir]] [[John Dill]] as [[Chief of the General Staff (United Kingdom)|Chief of the Imperial General Staff]] (CIGS), the professional head of the [[British Army]],<ref>{{London Gazette| issue=35397| startpage=7369|date=26 December 1941| supp=y| accessdate=26 March 2009}}</ref> in which appointment he also represented the Army on the [[Chiefs of Staff Committee]]. In March 1942 he succeeded [[Admiral of the Fleet (Royal Navy)|Admiral of the Fleet]] [[Dudley Pound]] as chairman of the Chiefs of Staff Committee.{{sfn|Dear and Foot|2005| pp=131 & 711}}<eod>