I do not understand the logic how to use army compared to navy, could anyone please help me out?

Which are the great forces?

Demolitions kill Fireships, Fireships kill Galleys, Galleys nearly kill Demolition but not over powered

Knights kill skirmishers and archers, knights die with pikemen but strong vs swordsman, archers kill swordsman and pikeman
Swords kill skirmishers and pikeman but weak against crossbows, pikes can kill skirmishers and skirmishers can kill pikeman.

Demoliton > Fireships, Fireships > Galleys and Galleys > or = Demolition.

Cavs > or = Range, Cavs < or > Infantry, Infantry < or > Ranged