517th may refer to:
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517th Air Defense Group
The 517th Air Defense Group is a disbanded United States Air Force organization. Its last assignment was with the 4711th Air Defense Wing at Ethan Allen Air Force Base, Vermont. It was inactivated on 18 August 1955.
The group was originally acti ...
, disbanded United States Air Force organization
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517th Airlift Squadron (517 AS), part of the 3d Wing at Elmendorf Air Force Base, Alaska
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517th Parachute Infantry Regiment (United States)
The 517th Parachute Infantry Regiment (517th PIR) was an airborne infantry regiment of the United States Army, formed during World War II. At times the regiment was attached to the 17th Airborne Division, 82nd Airborne Division and later, the ...
(517th PIR), separate infantry regiment of the United States Army
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517th Parachute Regimental Combat Team (517th PRCT), one of the U.S. Army's first elite combat units
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517th Strategic Fighter Squadron
The 517th Strategic Fighter Squadron is an inactive United States Air Force unit. Its last assignment was with the 407th Strategic Fighter Wing at Great Falls Air Force Base, Montana, where it was inactivated on 1 July 1957.
The squadron was ...
, inactive United States Air Force unit
See also
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517 (number)
500 (five hundred) is the natural number following 499 and preceding 501.
Mathematical properties
500 = 22 × 53. It is an Achilles number and an Harshad number, meaning it is divisible by the sum of its digits. It is the number of ...
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517, the year 517 (DXVII) of the Julian calendar
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517 BC
This article concerns the period 519 BC – 510 BC.
Events and trends
*519 BC—King Jing of Zhou (Ji Gai), Zhou Jing Wang becomes Monarch, King of the Zhou Dynasty of China.
*c. 518 BC—Darius I began construction of Persepolis, Parsa (Persepol ...
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