First of all, military didn't design the exo.
Um...They did,there is no such guy who could create an exo-skeleton in the Zone,none will bother.
2nd Military are just border guards and now and then go via chopper in the zone to get rid of stalkers.
Actually,there are like 5 guards in entrance of The Zone.
If you saw any helicopters killing Stalker then that's wrong.
Helicopters are back up + they bring more Military in the Warfare.
They are not like "Pilot: OMG LET'S LULPWN SOME STALKERS"
They send their soldiers to attack exact point,after that if they need a helicopter,they call it.
They only hold the agroprom just because its a vital point.
Military can't have a exo because they have skat-6 which were designed for military, and is there offical wear.Exo suits are not an offical suit for them, and wearing it would discrace there rank in the military from what i know.
Military can wear exo-skeletons.
Skat6 is just designed for them,they can wear any armour they damn well please.
I see recruit running in Skat6,does it ruin something?No.