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During the Korean War and the Vietnam War, US ground forces used the M127A1 White Star Signal Flare Parachute to illuminate the jungle in forward positions. A modern LUU-2B flare at 1,000 feet altitude illuminates the ground at 5 lux in a radius of 1500 feet. Burn time is 4–5 minutes.
Army regulation AR-850-5 issued August 1942 ordered a plain white five pointed star, as the national symbol, it was seen in all theatres from 1943 and by 1944 was the most common national identification sign. [4] The star point was supposed to be facing rearwards on flat surfaces, upwards on a glacis. [1]: 54–5
The flag is derived from the central and supporting elements of the Space Force seal, including the delta wing, globe, elliptical orbit, Polaris star, and star clusters. Beneath the central imagery "UNITED STATES SPACE FORCE" and the year 2019 in Roman numerals in white lettering, indicating the name and birth year of the service.
The first use of Army branch insignia was just prior to the American Civil War in 1859 for use on the black felt hat. A system of branch colors, indicated by piping on uniforms of foot soldiers and lace for mounted troops, was first authorized in the 1851 uniform regulations, with Prussian blue denoting infantry, scarlet for artillery, orange for dragoons, green for mounted rifles, and black ...
The United States Army Signal Corps (USASC) is a branch of the United States Army that creates and manages communications and information systems for the command and control of combined arms forces. It was established in 1860, the brainchild of Major Albert J. Myer , and had an important role in the American Civil War .
Messier 81 (also known as NGC 3031 or Bode's Galaxy) is a grand design spiral galaxy about 12 million light-years away in the constellation Ursa Major.It has a D 25 isophotal diameter of 29.44 kiloparsecs (96,000 light-years).
The New General Catalogue of Nebulae and Clusters of Stars (abbreviated NGC) is an astronomical catalogue of deep-sky objects compiled by John Louis Emil Dreyer in 1888. The NGC contains 7,840 objects, including galaxies, star clusters and emission nebulae.
[3] [7] Both clusters have experienced episodic star formation. Super star cluster A, located in the northwest of the galaxy and actually formed of two close clusters (NGC 1569 A1 and NGC 1569 A2), [8] contains young stars (including Wolf-Rayet stars) that formed less than 5 million years ago (in NGC 1569 A1) as well as older red stars (in NGC ...