The committee consisted of Western Union Commanders-in-Chief for the three military branches (Land, Naval and Air), as well as the senior officer, designated Chairman. Their immediate task was to study the tactical problems of the defence of Western Europe, i.e. make plans to meet a Russian armed threat in Western Europe. They did not assume executive command of any forces in peacetime, although they were in close contact with Military Governors of the occupation zones, and it was hoped that, to a limited extent, peacetime dispositions could be adjusted to meet the needs of defence.