Question: Field Marshal Alan Francis Brooke, 1st Viscount Alanbrooke, & Bar, was a senior officer of the British Army, As chairman of the Chiefs of Staff Committee, Brooke was the foremost military advisor to which British Prime Minister, and had the role of co-ordinator of the British military efforts in the Allies' victory in 1945, who was this British statesman, army officer, and writer?
Sentence (from "Alan Brooke, 1st Viscount Alanbrooke"): He was Chief of the Imperial General Staff, the professional head of the British Army, during the Second World War, and was promoted to field marshal in 1944.
Relevant evidence: No