Force sizes

Roger B said:

Definitions:

Fire Team - 3-5 men 
squad - 2 fire teams?

[Tomb] Also known to some as a section. Can have 3 fireteams. Or one
small fireteam of 2-3 for a support weapon and a manouver element of
5-9. Basically 6-12 guys depending on your flavour.

Platoon - 3-4 squads? or 3-4 units of armour?

[Tomb] 3-4 squads/sections plus perhaps a platoon weap det (depends on
force doctrine). Say 25-45 guys depending on squad size and
attachements. 

After this I am even more clueless

Company?

[Tomb] 2-4 line platoons usually, plus a Company HQ (small), plus
sometimes attached armour (if infantry company). This will vary between
about 50 and 160 men. Average is likley around 100-130.

Brigade?

[Tomb] Usually some sort of entity comprised of multiple battalions.
Combined arms with support arms attached like engineers, recce,
support/logistics, etc. 

Battalion?

[Tomb] 2-4 companies, possibly with a couple of support platoons
attached, plus arty. Probably 300-450 men in total. Maybe 550-600 if it
is a reinforce B'n. 

Any I missed?

Oh, on the books subject, has anyone read the Shelley books? Cadet, Lt,
Captain, etc?

[Tomb] Read, enjoyed, recommend. Stargrunt and DS2 (mostly Stargrunt)