BMP-2 is empty in editor and the three crew members are moved in it with moveInGunner etc. commands. All crewmen have private ranks while the rest of the squad has ranks from corporal to lieutenant.
I have updated the mission to beta 1.3, I skipped beta 1.2 as it was just for personal use. I added Norrin's revive script for the medic to use. There's no mobile base or any other respawn so if the timer runs out (90 seconds) you will die permanently.
*EDIT*
Hotfixed to beta 1.4 as the revive system was quite broken. Hopefully it works now.