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24-hour clock. A public 24-hour clock in Curitiba, Brazil, with the hour hand on the outside and the minute hand on the inside. The modern 24-hour clock is the convention of timekeeping in which the day runs from midnight to midnight and is divided into 24 hours. This is indicated by the hours (and minutes) passed since midnight, from 00 (:00 ...
This is a list of established military terms which have been in use for at least 50 years. Since technology and doctrine have changed over time, not all of them are in current use, or they may have been superseded by more modern terms. However, they are still in current use in articles about previous military periods. Some of them like camouflet have been adapted to describe modern versions of ...
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'.
List of abbreviations, acronyms and initials related to military subjects such as modern armour, artillery, infantry, and weapons, along with their definitions.
More: Vice presidential debate live updates: How to watch Tim Walz and JD Vance face off Tune into the CBS News Vice Presidential Debate on Tuesday, Oct. 1, at 9 p.m. ET on CBS or simulcast on www ...
The nautical mile (nmi) was originally defined as the arc length of a minute of latitude on a spherical Earth, so the actual Earth circumference is very near 21 600 nmi. A minute of arc is π 10 800 of a radian. A second of arc, arcsecond (arcsec), or arc second, denoted by the symbol ″, [2] is 1 60 of an arcminute, 1 3600 ...
Aerial imagery is a common asset in military matters, but 3D maps can be difficult to collect on short notice without specialized equipment. This new photogrammetry technique from the Army Corps ...
This timeline of United States government military operations, based in part on reports by the Congressional Research Service, shows the years and places in which U.S. military units participated in armed conflicts or occupation of foreign territories.