Well, after a solid 14 hours of learning scripting, learning DAC, learning classnames, and applying what I've learned, I've got a playable beach invasion mission up and running in the I44 mod. It's based heavily on the stock multiplayer version, so I can't take much credit except for the scripting that runs the DAC, and the modifications to the DAC folder that DAC_Extern refers to. And some other minor scripts. I give 98% of the credit for this mission to Silola for DAC, the Invasion 1944 team, and PacUK for the mission itself.
It's not done, but the allies will spawn, take the beach, and take the objectives, all without any intervention from you, if you want to cower in a ditch for 3 or 4 hours. My eyes are burning from staring at config files and scripts for a whole day, and I don't usually have a whole day to work on stuff like this in Iraq, so here's the WIP mission to play, enjoy, learn from, and leave some feedback.
-Savegames for every objective (This thing is a marathon, you'll probably use them)
-Dynamic AI groups with respawn
-Runs on modest hardware (I created this on my laptop)
-Modified AI parameters for the defense. You'll get a lot more tracers flying around on the beach, and some nasty direct fire from a Pak-40, if you're not careful.
-The AI can be kind of slow to the objective. Chalk it up to the DAC's excellent scripting and control that makes them want to avoid dying a little more than usual.
-No medics? This mission will take hours, and I wanted to avoid the situations you sometimes find in the Arma games where you're crawling because you're shot in the legs, can't aim your weapon because of wounded arms, and the medic can't get to you because of [Medic's busy, Hedgerows borked pathfinding, Medic got shot, DAC didn't spawn a medic, etc...]. Instead, I've created a script that will regenerate your health over some seconds, so if you get knocked down by a near miss from a grenade blast, you're not stuck restarting from a save point. You're still quite vulnerable, and you will die as easily as you're used to, but if you stay out of harms way, your health will regenerate back up to full so you can drive on.
-Bangalores: I'm still learning scripting, in fact, I started today, so in place of AI placing and detonating bangalores to get through the seawall, there's a trigger that will createvehicle some explosive rounds under key points in the wire, activated when Blufor reaches the Seawall.
-Folder, not PBO? It's still WIP, and I'm still learning, so in case you too wanted to open it up in the editor to change anything, learn from the mission, or use the DAC scripts I've modified, they're easily accessible with no 3rd party tools.