Alan Brooke vs Ernest J. King

In December 1941, Alan Brooke was appointed Chief of the Imperial General Staff (CIGS), the professional head of the British Army. He served in this role throughout World War II, overseeing military strategy and operations, and was a key member of the Chiefs of Staff Committee that advised Prime Minister Winston Churchill.

In January 1943, Brooke attended the Casablanca Conference with Churchill and Roosevelt, where Allied strategy for the remainder of World War II was discussed. The conference agreed on the policy of 'unconditional surrender' for the Axis powers and the invasion of Sicily, with Brooke playing a key role in shaping military plans.

In November-December 1943, Brooke attended the Tehran Conference with Churchill, Roosevelt, and Stalin. The conference coordinated Allied military strategy against Germany, including the timing of the cross-channel invasion (Operation Overlord) and the Soviet offensive, with Brooke providing military advice on the feasibility of operations.

As CIGS, Brooke was instrumental in planning the Normandy landings (D-Day) on June 6, 1944. He coordinated with Allied commanders to develop the invasion strategy, including the selection of landing beaches and the allocation of forces, which led to the successful liberation of Western Europe from Nazi occupation.

On January 1, 1944, Alan Brooke was promoted to the rank of Field Marshal, the highest rank in the British Army. This promotion recognized his exceptional service as CIGS and his contributions to Allied victory in World War II.

King was appointed Commander-in-Chief of the US Fleet (COMINCH) in December 1941, following the attack on Pearl Harbor. He was given authority over all naval operations in the Atlantic and Pacific theaters.

Under King's strategic direction, the US Navy decisively defeated the Japanese fleet at the Battle of Midway. The victory turned the tide in the Pacific War, destroying four Japanese aircraft carriers and shifting the strategic initiative to the Allies.

King was appointed Chief of Naval Operations (CNO) in March 1942, combining the roles of COMINCH and CNO. He became the single most powerful naval officer in US history, directing all aspects of the Navy's war effort.

King was promoted to the newly created rank of Fleet Admiral (five-star rank) in December 1944. He was one of only four US naval officers to hold this rank during World War II.