about 1 year ago - Blitzkrieg Wulf - Direct link
Generally I'll pull ESS off of premiums, or it's the last thing I research on normal vehicles.

Always really annoying to think I am pressing G for regular smoke canisters, end up pressing H (Or, press both...), and then the tank just spews smoke everywhere.

Really the only thing I've seen ESS used for reliably is making it impossible for your teammates to leave the spawn area because they can't see all of the clutter to drive around.