INDIRECT FIRE

Only units marked M or (H) may engage in Indirect Fire. Orders for indirect fire attacks must be written during the Combat phase of the turn before the attack is resolved. (ex: in Turn 3's Combat phase, player writes down attacking unit and target hex for Indirect Fire in Turn 4.) Once the order is written, the attack must take place as written or the attacking unit may not fire at all in that turn.

(H) units must be over ¼ of their Range away from their target hex to use Indirect Fire.

A friendly combat unit must be able to trace LOS to the target hex per Spotting rules. LOS to the attacking hex(es) is not required at any time. Wagons and trucks may not be used for spotting.

Loaded and/or dispersed units may not be targeted for Indirect Fire. IF always affects ALL units in the target hex.

Indirect Fire and Direct Fire may not take place against the same target hex in the course of one phase.

If all units spotting for a target hex are destroyed, dispersed, or move before IF is executed, roll one die:

1-2 IF hits target hex
3-5 IF is off-target, hitting a neighboring hex (roll die – 1-6 clockwise with 1 due north)
6 IF fire is ineffective

Resolving IF attacks:

Add up attack strength of all units attacking target hex
Divide total by number of units in target hex (transporter/transported count as 1 unit)
Apply result as new attack strength to each unit in target hex; resolve individually on the CRT
ex: 80 attack factors vs. 3 units in target hex w/defenses of 10, 8 and 3; 80 div 3 = 26; 26-10 = 2-1, 26-8 = 3-1, 26-3 = 4-1

courtesy of http://www.unlikelyprofessor.com/wargames/PZLDRulesMain.html