[Griefbringer]

Do you have spotter planes available? If yes, then send those to check your planned flight path and landing zone. They should be able to spot at least some of the enemy in the area - but don't expect them to find everyone. However, they are a bit vulnerable to flak, so it might be a good idea to suppress known enemy AA positions with a bit of artillery before flying them in.

As for the snipers and infantry hiding in the bushes, if you are in a hurry then you might just prepare yourself into taking some hits from them. For this purpose you might want to lead with a few expendable light helicopters (with no passengers inside) - once they draw the enemy fire (and if lucky, survive and spot the firer) you can then either fly around that enemy or use your gunships to suppress it so you can just fly straight over. Also, you might want to drop some artillery on likely enemy hiding places before flying over them.

Just remember that your brave men will be extremely vulnerable when unloading from their helicopters - one well placed MG can reap quite havoc amongst them. Therefore you might want to use your artillery to drop a ring of smoke rounds around the landing zone to make it safer to unload. If necessary, have your infantrymen pop a few more smoke grenades once they land.

And remember, do not tarry in the landing zone too long - you want to have your men away and spread out a bit before any mortar rounds will start landing on that area. Just remember that the cunning Charlie might have placed some minefields on the potential landing zones, which might hinder your movement - as well as any craters you might have caused by pounding the area with large caliber artillery.