New to SB: Vietnam - any help for a raw recruit?

[nim8or]

I've played the HPS Panzer Campaigns series for years, long enough to hold my own against the AI and perhaps even a hapless human opponent once in a while if I catch them sick, drunk and sleepy. Squad Battles: Vietnam, however, is truly a different entity altogether I am finding and I need some assistance or pointers :chin:

Basically the scenarios I have tried thus far are void of cover and I have no artillery, supporting assets or smoke to start, resulting in no soldiers left at the end :( As I mobilize and move forward toward the objectives I am simply cut down by mobs of VC squads, usually in bunkers, that I simply can't seem to touch with the weapon systems I have to deploy. I know there are strategies I must be missing ... can anyone offer a suggestion or two?

Thanks!
-nim8or