O1

Second Lieutenant
(Air Force - 2nd Lt)
(Marines - 2dLt)
(Army - 2LT)

Ensign (ENS)

O2

First Lieutenant
(Air Force - 1st Lt)
(Marines - 1Lt)
(Army - 1LT)

Lieutenant Junior Grade (LTJG)

O3

Captain
(Air Force - Capt)
(Marines - Capt)
(Army - CPT)

Lieutenant (LT)

O4

Major
(Air Force - Maj)
(Marines - Maj)
(Army - MAJ)

Lieutenant Commander (LCDR)

O5

Lieutenant Colonel
(Air Force - Lt Col)
(Marines - LtCol)
(Army - LTC)

Commander (CDR)

O6

Colonel
(Air Force - Col)
(Marines - Col)
(Army - COL)

Captain (CAPT)

O7

Brigadier General
(Air Force - Brig Gen)
(Marines - BGen)
(Army - BG)

Rear Admiral (lower half) (RDML)

O8

Major General
(Air Force - Maj Gen)
(Marines - MGen)
(Army - MG)

Rear Admiral (upper half) (RADM)

O9

Lieutenant General
(Air Force - Lt Gen)
(Marines - LGen)
(Army - LG)

Vice Admiral (VADM)

O10

General
(Air Force - Gen)
(Marines - Gen)
(Army - GEN)

Admiral (ADM)