First off,a Vietnam mission:
You need an average sized map,(Desert Island Map size would probably be good,as it is good size,but should be a little bigger)basically,you make a base(US preferably),with wire,fences surrounding a compound,with a small opening for a gate,you put all the necessary buildings for a long mission here(field hospital,tents,perhaps a fire or 2),and lots of vehicles(rows of helicopters,support trucks,and all other vehicles),put a couple of squads in to guard the base,and maybe a heavy MG by the gate,so when the mission starts,the player should be around camp,totally peaceful,fires burning,weapons not in a firing position(ie,on their backs),and have them sit by the fire(in a cutscene)or in the tent,when the cutscene finishes an alarm sounds,then it becomes night,the alarm sounds,and a small message appears,asking the player(a Lieutenant preferablly),to organize a patrol,as some US outpost is being attacked,the player gets some extra ammo,items if needed from ammo crates,loads on the chopper(meanwhile the other 3 squads load on the other choppers),and they all fly out to a remote end of the island,where say half a squad of US soldiers,are being hit by 4 East mechanized squads,1 East tank platoon and a few shilkas,the player and the 3 other squads attempt to land/drop off the arriving soldiers to assist the US soldiers already there,most probably,the US choppers will be shot down and the player will be forced to get back to his own safe zone(the base,or if you decide,have a few US mech. squads patrolling near the base)he has to get through the enemy territory,or get an airlift back to the base....
West-East Germany
I tried this on the Desert Island Map,I set up a line of wire,with a small opening for people only,spanning across the island,then another line parralell to it,about 2 hexes away,had a US squad on the left side,and a Russian side on the right,they were too far away to see/fire on each other,what you could do is have you as a resistance/civilian trying to sneak from East side to the West.......or even maybe an Eastern guard running over to the other side.Now if you could simply do this on another map(one with cities,or something besides sand perhaps),it could actually look good