Part 2 Volume 1: Military Structure - Organization

The basic building block of all Army organizations is the individual soldier. A small group of soldiers organized to maneuver and fire is called a squad. As elements of the Army's organizational structure become larger units, they contain more and more subordinate elements from combat arms, combat support and combat service support units.

A company is typically the smallest Army element to be given a designation and affiliation with higher headquarters. This alphanumeric and branch designation causes an "element" to become a "unit."

Company - 0 to 10 soldiers. Typically commanded by a sergeant or staff sergeant, a Company is the smallest element in the XR structure, and its size is dependent on its function.

Squad - 20 to 30 soldiers. Two companies form a Squad, which is commanded by a First Sergeant with a Master Sergeant as the commander's assistant.

Platoon - 30 to 60 soldiers. A platoon is led by a Captain with an NCO (Non-commissioned officer) as second in command, and consists of two squads.

not trying to mess things up but a Company is the next biggest thing in the military if your trying be using a military structure. It would go:
Squad-is a team of 4-6 lead by a CPL or SGT even a SSG, with cpl spc and pvt as lower rank
Platoon-A platoon has about 25-35 troops (there isnt really a set number, thats how many you see the most). A platoon sgt. and a platoon CO.(which is a LT) There can be 4-6 men in a squad and 2-3 squads in a section and then 3-4 sections in a platoon. Every squad has a squad leader.
Company-lead by first sgt and commander, there in charge of all the platoons and the platoon leader which is sergeant first class or ssg if dont have the person to lead it talk to the commander and 1st sgt.

I hope that helps, because if u are going for a real military structure this is not even close and would not want people to just think we made all this up with out research.