It seems in the 1.0.44beta version, while playing the Operation Husky scenario, and launching an invasion by clicking "Invade", it's possible to cancel the move after the attrition level is shown by quickly pressing ESC before the message disappears. There seems to be no negative consequences or attrition loss due to the move not happening as well. If I am understanding this correctly, this would allow one to keep trying for a low attrition on amphibious movement.
