Ok, thank you for your information and i understand your reasoning for creating the rule, however i still think the rule as written in the manual strongly suggests that manual bridge damage is not possible if the designer selects the rule of that scenario, i quote again "manual bridge destruction using engineer units is
not allowed during the scenario since the destruction of bridges is controlled entirely by the auto destruction feature."
"Not allowed" seems to suggest both sides to me? I am assuming the engine has been changed but the manual has not?
I hope no one thinks i am "nit picking".