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echelon |
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echelon [ˈɛʃəˌlɒn] n 1. a level of command, responsibility, etc. (esp in the phrase the upper echelons) 2. (Military) Military a. a formation in which units follow one another but are offset sufficiently to allow each unit a line of fire ahead b. a group formed in this way 3. (Physics / General Physics) Physics a type of diffraction grating used in spectroscopy consisting of a series of plates of equal thickness arranged stepwise with a constant offset vb (Military) to assemble in echelon [from French échelon, literally: rung of a ladder, from Old French eschiele ladder, from Latin scāla; see scale3] Echelon an arrangement of troops drawn up in parallel lines in step formation, 1796; vessels advancing in line at an angle to the direction of sailing. 1. A subdivision of a headquarters, i.e., forward echelon, rear echelon. 2. Separate level of command. As compared to a regiment, a division is a higher echelon, a battalion is a lower echelon. 3. A fraction of a command in the direction of depth to which a principal combat mission is assigned; i.e., attack echelon, support echelon, reserve echelon. 4. A formation in which its subdivisions are placed one behind another, with a lateral and even spacing to the same side. ThesaurusLegend: Synonyms Related Words Antonyms
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