fixing infantry in the campaign mode (experience)

[gila]

In my experinces with the game,causlites on infranty have a definate effect when repaired on exp.and morale.

Less so on Vets and elites becuase they tend to suffer less causlities as they are better at surviving and as (you) the user will also tend to keep them from getting too shot up too bad and let them go less than half thier pre-battle strength.