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Date-time group. In communications messages, a date-time group ( DTG) is a set of characters, usually in a prescribed format, used to express the year, the month, the day of the month, the hour of the day, the minute of the hour, and the time zone, if different from Coordinated Universal Time (UTC). [citation needed]
The history of the United States Army began in 1775, as part of the United States Armed Forces. The Army's main responsibility has been in fighting land battles and military occupation. The Corps of Engineers also has a major role in controlling rivers inside the United States. The Continental Army was founded in response to a need for professional soldiers in the American Revolutionary War to ...
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'. I-Day. Used informally within the U.S. military bureaucracy to variously designate the "Implementation Day" or the ...
International date and time formats typically follow the ISO 8601 format (2024-07-14) for all-numeric dates, [3] write the time using the 24-hour clock (12:24), [4] and notate the date using a day–month–year format (14 July 2024). [5] These forms are increasingly common in American professional, academic, technological, military, and other internationally oriented environments.
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.
This is a list of current formations of the United States Army, which is constantly changing as the Army changes its structure over time. Due to the nature of those changes, specifically the restructuring of brigades into autonomous modular brigades, debate has arisen as to whether brigades are units or formations; for the purposes of this list, brigades are currently excluded. Active status ...
The United States Army ( USA) is the land service branch of the United States Armed Forces. It is one of the eight U.S. uniformed services, and is designated as the Army of the United States in the U.S. Constitution. [15] The Army is the oldest branch of the U.S. military and the most senior in order of precedence. [16] It has its roots in the Continental Army, which was formed on 14 June 1775 ...
The military time zones are a standardized, uniform set of time zones for expressing time across different regions of the world, named after the NATO phonetic alphabet. The Zulu time zone (Z) is equivalent to Coordinated Universal Time (UTC) and is often referred to as the military time zone. The military time zone system ensures clear communication in a concise manner, and avoids confusion ...