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The letters are typically used in conjunction with military time. For example, 6:00 a.m. in zone UTC−5 is written "0600R" and spoken "zero six hundred Romeo". The numeric zone description or "plus and minus system" indicates the correction which must be applied to the time as expressed in order to convert to UTC.
The unnamed day on which an order, normally national, is given to deploy a unit. (NATO) H-Hour. The specific time at which an operation or exercise commences, or is due to commence (this term is used also as a reference for the designation of days/hours before or after the event). (NATO); also known as 'Zero Hour'.
The Joint Electronics Type Designation System (JETDS), which was previously known as the Joint Army-Navy Nomenclature System(AN System. JAN) and the Joint Communications-Electronics Nomenclature System, is a method developed by the U.S. War Departmentduring World War IIfor assigning an unclassifieddesignator to electronic equipment.
Multiservice tactical brevity code. March 2023 edition cover page of the Multi-Service Brevity Codes. Multiservice tactical brevity codes are codes used by various military forces. The codes' procedure words, a type of voice procedure, are designed to convey complex information with a few words.
An MGRS grid reference is a point reference system. When the term 'grid square' is used, it can refer to a square with a side length of 10 km (6 mi), 1 km, 100 m (328 ft), 10 m or 1 m, depending on the precision of the coordinates provided. (In some cases, squares adjacent to a Grid Zone Junction (GZJ) are clipped, so polygon is a better ...
The International Radiotelephony Spelling Alphabet or simply Radiotelephony Spelling Alphabet, commonly known as the NATO phonetic alphabet, is the most widely used set of clear-code words for communicating the letters of the Roman alphabet. Technically a radiotelephonic spelling alphabet, it goes by various names, including NATO spelling ...
AA – Assembly area. AA – Anti-aircraft. AA – AEGIS ashore. AAA – Anti-aircraft artillery "Triple A". AAAV – Advanced Amphibious Assault Vehicle. AAC – Army Acquisition Corps. AAD – Armored amphibious dozer. AADC – Area air defense commander. AAE – Army acquisition executive.
The headstamp used a letter code for the date (O = 0, A = 1, etc.; "J" is used instead of "I"): the first two letters were the last two digits of the year and the third was the letter 'B' for "Berdan primed". FJ B would be 1969, GG B would be 1977, and JH would be 1998.