Correct. The exact rule is that for every additional "melee" unit that has not attacked (basically, not artillery, not trucks) you place next to an enemy unit, you gain a mass attack bonus that lowers the initiative of the defending unit by 1. So if you have 2 units next to an enemy unit, the enemy suffers a -1 INI penalty, if you have 3 units the enemy suffers a -2 INI penalty, and so on. This also applies for air combat.Zhivago wrote:
As far as I know, it does not matter if the units you move adjacent to an enemy held hex are core or auxiliary, I think the same multiple-front attack bonus applies. Just make sure you use some arty to suppress the unit in the city you are trying to attack. Pionere units are also very good to have because they ignore entrenchment levels. Some people like using the flame-throwing tank for this same reason (although it is super-fragile and a magnet for enemy attacks).
One interesting quirk of this rule is that INI bonus from exp is calculated after the mass attack rule. For instance, a 1-star enemy fighter with base INI = 10 is surrounded by 2 of your fighters. Normally, this fighter would have INI = 11, but since mass attack lower its INI to 9, it can't gain the extra INI from its experience.




