If the Unit Workshop is included in Civ III (Which I am sure of.) there should be a new unit chassis called the balloon. It would be the first air unit you could research. It would be pretty strong until the discovery of the airplane, which it would have a -50% of winning aganst (Like popping a...balloon!). Of course with the balloon comes the "Balloon Defence". The balloon defence would be a city improvement that would represent a ring of small balloons around a city to protect it from air attacks. The balloon defence would only work aganst planes with props so with the jet it would become obesolete. The defence would give a unit inside the city a 50% defence bonus. The only downside to the Balloon Defence is that it would have to "heal" every time it is used.
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The Viking Archives