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United States Air Force officer rank insignia
The United States Air Force officer rank insignia in use today.
==Current insignia==
This chart displays the United States Air Force officer rank insignia. The ranks are divided into three sections: company grade, field grade, and general officers. Company grade officers are those officers of grades O-1 to O-3. Field grade officers are those of grades O-4 to O-6. General officers are those of O-7 and above.
Currently, promotion from Second Lieutenant to First Lieutenant is virtually guaranteed after two years of satisfactory service. Promotion to Captain is virtually guaranteed at four years of satisfactory service. Previously there was a Promotion Board to Captain, but that was discontinued in 2013. An officer's record is reviewed by a selection board at the Air Force Personnel Center at Randolph Air Force Base in San Antonio, Texas. This process occurs approximately between the nine- and eleven-year mark, where a certain percentage of Captains will be selected for Major. This process will repeat at the 13-16 year mark for promotion to Lieutenant Colonel and then around the twenty-year mark for promotion to Colonel.
The five-star grade General of the Air Force has only been held by General of the Air Force Henry H. Arnold. Federal law currently contains no provisions to promote an officer to five-star grade.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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