Casualty/Ordnance Clearing
 

During World War 2, and even now for that matter, does a standard protocol exist for dealing with knocked out armoured vehicles at the first opportunity, to clear dangerous ordnance and casualties from them?

My thought would be ordnance would need to be dealt with safely first, before teams could move in to recover casualties.

There would also probably need to be some form of standard ID markings that would be quickly applied to the outside of a vehicle to notify others that any ordnance and casualties had been dealt with, so teams would not be checking the same vehicles more than once.

David