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.
Typically, a company is the smallest Army element to be given a designation and an affiliation with higher headquarters at battalion and brigade level. U.S. Army Military Organization from Fire Team to Field Army / Group. Here is a rundown of the various elements of command in the U.S. Army (information derived from Army Operational Unit Diagrams): 1  Squad/section. A squad, which is the smallest element in the Army structure, is typically made up of four to 10 soldiers and normally is commanded by a sergeant or staff sergeant.