A few years back - about 1997 - I came across a title called Earth 2140 by Topware. It was a DOS game in the fairly new genre of Real Time Strategy. It rocked !
My Pentium 90 struggled to keep up with the animated mechs and massive displays of destruction, often the whole battlefield would be covered with drifting clouds of smoke.
When I saw Earth 2150 was in the works I waited anxiously for it's release - I wasn't disappointed!
Missile and smoke effects
Land Combat Sims