Hmm...Never head that. I suppose the only reason for that would be that the chemical reaction that produces the smoke releases heat which could combust dry vegetation and start a fire.
This probably is a secondary issue on a battlefield, where the concealment a smoke grenade can give you can save your life, but on an exercise or training mission in peacetime, I can see why commanders would make this prohibition regarding smoke grenade use around vegetation.
Fragmentation Grenades are explosive bombs that you throw.
Usually (if the game has grenades) you press "g".
The 'G' key will throw a grenade.
No, there are no throwable grenades in Team Fortress 2
Frag Grenades
Only grenades.
Press L2.
Press G after equipping.
During the Viet War era, US grenades (frag, concussion, smoke, etc) were generally NOT marked indicating the delay time. That data was taught in Basic and AIT (Advanced Individual Trainng). Smoke had NO delay; frag/concussion had delays, but, as taught, could NOT be trusted; translation: pull and throw immediately (none of that Hollywood counting of seconds stuff!).
Press R1 to fire your gun and L2 to throw grenades.
go to options then change the controls
alot