How do Lightning Assaults work?
This advantage does one thing: It lets you get around the normal restriction that a transport has to stop when it unloads. So, here’s precisely what you can do with a lightning transport: Load up 2 infantry, say, in Sea Zone A. Move one space to Sea Zone B, and drop off one of those infantry on an enemy territory. Then, move your transport again to Sea Zone C, and drop off the other infantry in a different enemy territory. You don’t get to move the transported land units twice, or have the transport carry double capacity, or anything like that — Lightning Assaults only gives you the ability to “split” your landings between two neighboring sea zones.