A squadron was historically a cavalry subunit, a company or battalion-sized military formation. The term is still used to refer to modern cavalry units but can also be used as a designation for other arms and services. In some countries, like Italy, the battalion-level cavalry unit is called "Squadron Group".

Why is it called a squadron?

This word comes from the military, but the meaning varies depending on the branch. In the army, a squadron is a cavalry (horses) unit that has at least two troops, which are smaller collections of soldiers. The squadron also includes a headquarters and support.

How big is a battalion?

BATTALION. Battalions consist of four to six companies and can include up to about 1,000 soldiers. They can conduct independent operations of limited scope and duration and are usually commanded by a lieutenant colonel. There are combat arms battalions, as well as combat support and combat service support battalions.