Starting in the late 1970s and. continuing for decades, an increasing amount of the. protective layer of stratospheric ozone above Antarctica. would disappear during late September and October, cre-. ating what is popularly known as the ozone hole.
A battalion is a military unit. The use of the term battalion varies by nationality and branch of service. Typically a battalion consists of 300 to 800 soldiers and is divided into a number of companies. A battalion is typically commanded by a lieutenant colonel. In some countries the word battalion is associated with the infantry. The term was first used in Italian as battaglione no later than the 16th century.
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).