Bit of an arcane question here for someone with access to accurate historical sources: (CPunk, are you out there?) In 1942 (prior to the Dieppe raid) Mountbatten was head of Combined Operations HQ (COHQ). This post carried the title of "ACO" - Advisor on Combined Operations - to the Chiefs of Staff Committee (CoSC). Prior to July 1942, the chain of command for major operational decisions was COHQ to CoSC to the War Cabinet. On 27 July 1942, CoSC minutes record that Mountbatten no longer had to seek CoSC approval for all decisions (the reason for the subsequent fog around whether Op Rutter was approved by CoSC). Many popular history resources (eg BBC) seem to claim that Mountbatten was actually appointed to the CoSC in 1942, with COHQ thus having a fourth "seat" alongside the heads of the Army, Navy and Air Force. A search of my own limited library of books by grown-ups doesn't throw up a confirmation of this, and my conclusion is that Mountbatten simply remained an "Advisor" to the CoSC, albeit a very powerful and well-connected one. Any military historians able to slay this one? Thanks!