Indian Air Force a commanding officer with the rank of wing commander. Some transport squadrons and helicopter units are headed by a commanding officer with the rank of group captain. Flights are sub-divisions of squadrons, commanded by a squadron leader. Each flight consists of two sections. The smallest unit is the section, led by a flight lieutenant. Each section consists of three aircraft. Within this formation structure, IAF has several service branches for day-to-day operations. They are: In September 2004, the IAF established its own special operation unit called the Garud Commando Force, consisting of approximately 1,500 personnel. For starting this special force
United States Air Force officer rank insignia United States Air Force officer rank insignia The United States Air Force officer rank insignia in use today. 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 after another two years of