Term is "floppy disk". Disk refers to magnetic media while disc refers to optical one. It's written at least in Wikipedia.
I recall reading the scenarios can work in WinSPWW2 after some conversion process (game should come with it). To get the scenarios working in SPWAW, map needs to be converted from WinSPWW2, and rest of the scenario (units & their placements, objectives etc.) needs to be recreated from the scratch. Best to play with WinSPWW2.
I myself have few of the scenario floppies. I guess Novastar is the creator, though I'm not sure. What I'm sure though, is creator is Finnish, and disks I got are about Winter War (named Cold Will), SS Viking, and Stalingrad (campaign).
You know what they say, don't you? About how us MechWarriors are the modern knights, how warfare has become civilized now that we have to abide by conventions and rules of war. Don't believe it. MekWars