Okay, Let me explain how it works.
Infantry recons have VH optics, which allows seeing medium stealth units in yellow cover from 1440m
And for green cover, it can detect ATG from 720m
Never, EVER hide them in yellow cover.
On the other hand, vehicle recons have H optics, which allows seeing medium stealth units in yellow cover from 960m
And for green cover, it can detect ATG from 480m
Which allows detecting ATG just outside of infantry AT weapon range.
Now let's modify stealth value of ATG from medium to good.
VH recon will detect ATG in wood from 360, well within Infantry shootout range.
H recon will detect ATG in wood from miserable 240m, making them obsolete.
1 Veterancy increases recon's optic strength by 15%, but usually Para deck have access to them and their purpose is giving them intelligence advantage.
If you having trouble to hiding them, just hold them backside of bocage and push forward when the opportunity comes.