Eddie has far more experience, but I found these two pdfs in the ToE yahoo group
http://games.groups.yahoo.com/group/TOandEs/
first one is ToE for a Bradley infantry battalion under force 21 structure. (could be the same pdf that Eddie sent you already)
the second pdf is a ToE for M113 infantry battalion.
as far as LAV-25s, are you referring to real world USMC LAV-25 battalions, or the T2k world LAV-25 battalions that are assigned to the 9th Motorized and the Light Infantry Divisons?
the USMC guys (jester, et al) can go into better detail regarding USMC LAVs.
Not sure how a squad would break down in a T2k Army LAV equiped unit. Maybe similar to how they break down for Bradleys (1 fireteam per LAV plus crew)