Commando Raids: A naval stack which attacks a city is allowed to continue moving provided (a) it moves back into water, (b) it attacks, or (c) [Deluxe only] it moves within the city. Thus, one could send navies to attack a hostile city, attack a ground stack on a land square next to the city, and then return to the water out of range of retaliation. These "commando raids" can be devastating if an enemy doesn't see the danger he is in. The phrase "provided (b) it attacks" deserves expansion: as long as there are more enemies adjacent to the unit, and it keeps winning, it can *keep* attacking as far onto land as its *navy* movement allowance lets it! In PC Classic things are even better: You can also sail through cities into hills or forest beyond, using up the movement left over from being a navy, saving you considerable movement costs next turn, if the unit doesn't need to remain in the city to defend it, without needing to attack anything!