USA: Barton, Nimitz, Eisenhower, MacArthur.

Soviet Union: zhukov, Cui Kefu

China: Wei.

From strong to weak: manstein (manstein Plan), zhukov (Stalin's fireman), Rommel (Desert Fox), guderian (Blitzkrieg), Lund Stedt (Kiev Battle), Nimitz (Island Jumping Tactics), Eisenhower (Normandy Landing), Barton (Iron General), Wei (China Hero), MacArthur.

(Personally, I think Germans are awesome. )