In regards to the TO&E, it seems you've forgotten the medical
department :-)
Typically at the division level, there is a medical company as
part of the HHB. It provides medical support to the unit,
largely preventative medicine. It is commanded by the division
surgeon.
At the battalion level, the re is a medical platoon as part of
the HHC. It provides frontline care (i.e. battlefield medics and
the battalion aid station). It consists of two medical officers
and about sixty corpsmen (generally). The corpsmen are spread
between medics assigned to combat platoons, ambulances, and
treatment teams at the BAS.
ttfn,
eric sergienko