Rule: Firing Through Marines

Source: Expansion Rules

by: Leading Edge Games

In ALIENS, there is no restriction on the Marines' ability to fire through each other, except for the -5 modifier applied when firing at Aliens who are in the same square with a Marine. If the players desire more realism (and a great deal more trouble killing Aliens), the following rule should be applied.

If a Marine is firing through one or more squares containing other Marines, a modifier of -3 should be applied to his roll for each rank of Marines between the Firer and the target Alien.

The only exception to this is when the firing Marine is directly behind another Marine. In this case the Marine is assumed to be firing over the shoulder of the blocking Marine, and no penalty is applied.