A light plane is a original unit from the game, The Conquerors. It is not used often in wars.
A light plane in the beginning of the game is used for getting to hard to reach places that take time to get to, like a island. When in the middle of the game, most people switch to heavy planes since it does more damage than a light plane.
Attacking Tactic(s) Edit
A possible attacking strategy to use light planes with is for easy destruction of plants. If located on a map which includes water, this idea can go well due to the difficulty of reaching other energy crystals / oil.
When in a battle, the planes should have either tanks or soldiers to destroy any big threat to them such as anti air soldiers who specialize in destroying plane units.