So when exactly can I “call off” an amphibious assault; say my only escort is sunk by mines, rendering the operation impossible, can the transports stay where they are and not roll for mines. Or, since movement is considered simultaneous, do they still have to roll for mines even though they will not in fact be moving through to the target SZ even if they avoid the mines?
Or do they still have to move through anyway, but just not make the assault, which might be delayed suicide if there are hostile ships where they are moving to?
In other words you can call off the landing, but not the planned movement leading to the landing, even if it involves the transports moving 2 SZs including moving unescorted into a mined and hostile SZ?