Is airpower and artillery depicted with a lot of detail and options? Can you do things like air assault with helicopters and airborne drops?
Both air and artillery are depicted. Air is simple, you call it in by choosing a spot on the map, the program calculates an arrival time and it comes in when it gets there. Once called in, it is pretty much out of your control as it should be. It zooms in and attacks and takes ground fire if the bad guys have ADA assets. Then it flies away and if you get another sortie, it regroups for a period of time and become available again.
Artillery is well modeled. There are two types, off board and on board. Both can be called in anywhere on the map but if unobserved, it takes longer to adjust and fire FFE. You can set up the number of volleys per FFE, plot TRPs, do FASCAM, smoke, illumination and such. Its well modeled but easy to use.
There are helicopter. I've only used attack helicopter or been attacked by attack helicopters. This is one are I've not much used and they seem a tad difficult to get them to do what you want them to do, which may actually be realistic. I don't know if air assaults can be done. I don't think there is air drops but there could be.