Was defending a coastal base that was being shelled by a cruiser and battleship. Decided to try laying down smoke to obscure their view of the base structures. So upped an LVT4 and drove to the coast and fired 20 smoke shells. Upped again and some of the smoke shells were duds. Upped again, and more duds -- the first few were good, then several duds, then a few more good.
Is there a limit to the number of smoke shells that can be "active" in a given area? (Seems like there would be.)