Always have a radio squad.
This is the best squad in this campaign.
Equip it with 1 engineer (for rally point and ammo), 1 at gunner (to kill all the AA and AA half track), 1 sniper (makes you able to fight a long distance and therefor, save your AI from dying to make more arty strikes)
donāt use plane in pacific, you would waste your time.
equip one guy of your squad with a moltov for a AA tank easy kill. And give him +50% throwing distance perk.
use bayonet against AA tanks.
if the AA looking straight at you, you can snipe the shooter. In other case you have to flank it and aim for the head. Wait for few seconds foe the second shooter to take its place and repeat.
Japanese AT rifle are better than BA to shoot down ennemies if you donāt need to move.
Large Grenade Pouches - 3 smoke for cover or 3 Phosphorus to make area denial. I canāt believe how good those grenades are at denying entry to a building or a push from a certain direction.
Donāt clump up at the point like other campaigns.
You can be attacked on almost a 360 degree arc if the enemy is competent. You need to work the edges of the map on attack and defense to help hold or push through.
Always have an engineer in every squad. Building is so critical in this campaign.
On points that have buildings. Fortify and hold them. They are just as critical if not more so than that building as you can over watch and delay the enemy.
If you have them put AP mines everywhere.
On some maps, donāt go off building a rally on first contact. You might be better served holding the first push and then doing a rally.