In 1996, the National Institute of Standards and Technology defined electronic data interchange as the computer-to-computer interchange of strictly formatted messages that represent documents other than monetary instruments.
A battalion is a military unit with 300 to 1,200 soldiers that usually consists of two to seven companies and is commanded by either a lieutenant colonel or a colonel. Several battalions form a regiment or brigade. The nomenclature varies by nationality and by branch of arms, for instance, some armies organize their infantry into battalions, but call battalion-sized cavalry, reconnaissance, or tank units a squadron or a regiment instead.
A battalion is the smallest military organization capable of limited independent operations, in that the battalion is the lowest-level organizational unit containing an organic coordinating, or executive, staff (i.e., S-1, S-2, etc.) and a support and services unit (e.g., headquarters and headquarters company).