I recently discovered that one could get Warzone for the PC, as well as Playstation, which I play on at the moment, but once I complete it for the first time (no spoilers please) I'll shift over to just playing it on the PC. I haven't had much experience of it on the PC, as it kept crashing, but I found an updated version on Wikipedia and the change log says it now has those all important mission briefings.

Even with the few stable moments of play on the PC I noticed much better graphics and it was much easier to play and generally do stuff thanks to the mouse, the PS1 obiously uses a joystick, that can make things a touch difficult somtimes.
One significant difference is the lack of Unit Orders section on the wheel thing; the PS1 version had it and you could set units to return fire (which was kinda pointless really) and all that... one of its most useful features was the retreat at heavy damage setting, meaning units in the red on their health bars return to an LZ or the nearest repair facility and get patched up. But hopefully the my nimbless with the mouse will allow me to quickly select units in the red and evacuate them.
Also, I don't know if you can do this in the PC version, but on the PS1, you can press triangle to deactivate battle view and manually drive a unit, when a group is selected, you get to drive one unit and the rest follow, good for if your units are getting stuck or the retreat route is frought with too much peril.
Once I get well into the PC version, I'd like to have a go at making maps and scenarios.

I'll hopefully come to the forums on a regular basis too.