453rd Chemical Battalion
453rd may refer to: *453d Electronic Warfare Squadron, United States Air Force unit *453d Operations Group, inactive United States Air Force unit See also *453 (number) *453, the year 453 (CDLIII) of the Julian calendar *453 BC __NOTOC__ Year 453 BC was a year of the Roman calendar, pre-Julian Roman calendar. At the time, it was known as the Year of the Consulship of Quinctilius and Trigeminus (or, less frequently, year 301 ''Ab urbe condita''). The denomination 453 BC ...

453d Electronic Warfare Squadron
The 453d Electronic Warfare Squadron is a United States Air Force unit. It is assigned to the 850th Spectrum Warfare Group and is stationed at Joint Base Lackland-San Antonio, Texas. The squadron (aviation), squadron was first activated in August 1942 as the 453d Bombardment Squadron. After training in the United States, it deployed to England, and later continental Europe, where it engaged in combat until the spring of 1945, earning a Distinguished Unit Citation for its actions during the Battle of the Bulge. Following V-E Day, it served in the military occupation, occupation forces until returning to the United States, where it was inactivated in December 1945 upon arriving at the Port of Embarkation. The squadron was activated in the military reserve force, reserves in June 1949. In March 1951 it was mobilization, called to active duty for the Korean War. it was inactivated shortly thereafter and its personnel and equipment were used to fill out other units. The squadro ...
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453d Operations Group
The 453rd Bombardment Group is an inactive United States Air Force unit that was first organized in June 1943, during World War II, as a Consolidated B-24 Liberator heavy bomber group. After training in the United States, it deployed to England in December 1943, and, starting in February 1944, participated in the strategic bombing campaign against Germany with Eighth Air Force. Its 733d Bombardment Squadron completed 82 consecutive missions without a loss, a record for Eighth Air Force bomber units. James Stewart, of film fame, was group operations officer from 31 March to 1 July 1944. The group was programmed for redeployment to the Pacific and returned to the United States in May 1945 for training, however the Japanese surrender cancelled these plans and the group was inactivated in September 1945. The group was redesignated the 453rd Operations Group and activated at Fairchild Air Force Base in June 1992 to command Air Mobility Command (AMC)'s air refueling units at Fairc ...
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453 (number)
400 (four hundred) is the natural number following 399 and preceding 401. Mathematical properties A circle is divided into 400 grads. Integers from 401 to 499 400s 401 401 is a prime number, tetranacci number, Chen prime, prime index prime * Eisenstein prime with no imaginary part * Sum of seven consecutive primes (43 + 47 + 53 + 59 + 61 + 67 + 71) * Sum of nine consecutive primes (29 + 31 + 37 + 41 + 43 + 47 + 53 + 59 + 61) * Mertens function returns 0, * Member of the Mian–Chowla sequence. 402 402 = 2 × 3 × 67, sphenic number, nontotient, Harshad number, number of graphs with 8 nodes and 9 edges * HTTP status code for "Payment Required". *The area code for Nebraska. 403 403 = 13 × 31, heptagonal number, Mertens function returns 0. * First number that is the product of an emirp pair. * HTTP 403, the status code for "Forbidden" * Also in the name of a retirement plan in the United States, 403(b). * The area code for southern Alberta. 404 4 ...
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