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.
I think the US scales down a level so they have a Captain running a company etc (they have more soldiers to command I guess)! The Company is commanded by a Major and in his company he has 3 Rifle Platoons of around 24 - 30 men each, commanded by a Lietuenant. The US still has 1st and 2nd Lieutenants, Australia did away with this years ago and only has 1st Lieutenants now.