User blog comment:Trulyrandom/New Community Project idea thingey :P/@comment-4608429-20130607001033/@comment-4608429-20130611154045

Each Regiment is organised into companies, some as few as three, others as many as twenty. Companies are further divided into between three and six platoons, and platoons consist of between two and six ten-man squads led by a command squad of five. So the maths looks like this:

Platoon size: 25-65 men

Company size: 80((25x3)+5 for company command)-395((65x6)+5 for company command)

Regement size: 240+regimental command(80x3)-7900+regimental command(395x20)

They obviously wouldn't have a regiment of 240 men, but that's the official size proposed by Games Workshop in the Apocalypse book. If you want to have Tank/Artilery Regiments, then each Vechile takes the place of a Squad, and if you want to have a Super-heavy Regiment then each Super-heavy Tank is the equivalent of a platoon. Hope this helps.