British Army	US Army	Royal Navy	US Navy	RAF	USAF	Wehrmacht
Field Marshal	General of the Army	Admiral of the Fleet[?]	Fleet Admiral	Marshal of the Royal Air Force[?]	General of the Air Force	Feldmarschall
General	General	Admiral	Admiral	Air Chief Marshal[?]	General	General
Lieutenant General	Lieutenant General	Vice Admiral	Vice Admiral	Air Marshal	Lieutenant General	Generalleutnant[?]
Major General	Major General	Rear Admiral	Rear Admiral	Air Vice-Marshal[?]	Major General	Generalmajor[?]
Brigadier	Brigadier General	Commodore	Rear Admiral	Air Commodore[?]	Brigadier General
Colonel	Colonel	Captain	Captain	Group Captain[?]	Colonel	Oberst
Lieutenant Colonel	Lieutenant Colonel	Commander	Commander	Wing Commander[?]	Lieutenant Colonel	Oberstleutnant[?]
Major	Major	Lieutenant-Commander[?]	Lieutenant Commander[?]	Squadron Leader[?]	Major	Major
Captain	Captain	Lieutenant	Lieutenant	Flight Lieutenant[?]	Captain	Hauptmann[?]
Lieutenant	Lieutenant		Lieutenant Junior Grade	Flying Officer[?]	First Lieutenant	Oberleutnant[?]
		Sub-Lieutenant[?]
Second Lieutenant	Second Lieutenant		Ensign	Pilot Officer[?]	Second Lieutenant	Leutnant[?]
		Midshipman[?]		Acting Pilot Officer[?]

Notes
Certain ranks are war-time only.

Not listed are US Warrant officers, who are technical leaders who receive officer's pay, but wear different insignia and do not command troops.

Enlisted Ranks

British Army
Warrant Officer Class 1
Warrant Officer Class 2
Staff Sergeant[?]
Sergeant
Corporal
Lance Corporal[?]
Private