Understanding Defensive Fire

[GerryM]

1) It seems to me that when you have your turn and fire at a unit it gets an awful lot of defensive fire. So I am trying to understand this.

Say there is a single enemy infantry unit on the map and you can move 12 units, one unit at a time, into the six adjacent hexes. So you would have two units in each hex. How many defensive fire shots will that enemy unit get? (three total, one per unit advancing, etc....).

2) Sometimes it seems that if you don't fire the enemy doesn't use defensive fire. Is that right? If so it seems strange as why would the enemy not always fire as you are attacking them in general.

Thanks,

Gerry