Simple Questions

[RightDeve]

1. What is the function of Forward Observers? I think there is no difference when plotting the artillery fire using A0 unit or FO units.

2. What is the function of right clicking an infantry unit to empty hex to reveal its field of vision. I notice that the "Unit View" button can replace this method. Is it for changing an infantry unit's position on a hex so that it will suffer less damage just like in armored vehicles?

Thanks