During the Second World War, the threat of invasion led to a reversion to the old system. A Commander in Chief, General Sir Thomas Blamey, was appointed, and the Military Board was suspended, with its powers being transferred to the Commander in Chief. The post of Chief of the General Staff remained, but was now subordinate to the Commander in Chief. This was successful from a military point of view but the problem of a concentration of power recurred and, after the war ended, the government decided to re-form the Military Board. Blamey was replaced by Lieutenant General Vernon Sturdee in 1945 and the next year the post of Commander in Chief was again abolished, with Sturdee becoming Chief of the General Staff.