Ranks

E1	Private
E2	Private E-2 (PV2)
E3	Private First Class (PFC)
E4	Corporal (CPL)	Specialist (SPC)
E5	Sergeant (SGT)
E6	Staff Sergeant (SSG)
E7	Sergeant First Class (SFC)
E8	Master Sergeant (MSG)	First Sergeant (1SG)
E9	Sergeant Major (SGM)	Command Sergeant Major (CSM)	Sergeant Major of the Army (SMA)

Officer ranks in the United States military consist of commissioned officers and warrant officers. The commissioned ranks are the highest in the military. These officers hold presidential commissions and are confirmed at their ranks by the Senate. Army officers are called company grade officers in the pay grades of O-1 to O-3, field grade officers in pay grades O-4 to O-6 and general officers in pay grades O-7 and higher. Warrant officers hold warrants from their service secretary and are specialists and experts in certain military technologies or capabilities. The lowest ranking warrant officers serve under a warrant, but they receive commissions from the president upon promotion to chief warrant officer 2. These commissioned warrant officers are direct representatives of the president of the United States. They derive their authority from the same source as commissioned officers but remain specialists, in contrast to commissioned officers, who are generalists.
Warrant Officers
W1	Warrant Officer 1 WO1
W2	Chief Warrant Officer 2 CW2
W3	Chief Warrant Officer 3 CW3
W4	Chief Warrant Officer 4 CW4
W5	Chief Warrant Officer CW5
Officers
01	Second Lieutenant 2LT
02	First Lieutenant 1LT
03	Captain CPT
04	Major MAJ
05	Lieutenant Colonel LTC
06	Colonel COL
07	Brigadier General BG
08	Major General MG
09	Lieutenant General LTG
10	General GEN Army Chief of Staff
	General of the Army (Reserved for wartime only)