Only planes & ships can take out planes & ships - not tanks or troops.
Description:
Tanks or troops can take out tanks or troops. Artillery Units add support to each, increasing their attack or defense value. On it's own, Artillery can only disrupt tanks or troops, but Heavy Artillery can destroy other artillery. Combined Arms will be a priority as, for instance, tank/armored units can only use their full combat value when accompanied by infantry units. Ships and Planes cannot take out Tanks or Troops, but can take out Ships and Planes. Production not only increases the amount of revenue to use, it also, in some cases,increases the number of air and sea units able to be produced in certain cases. In some ways, the game is similar to "Axis and Allies" type games, but as a simulation with game elements.