Warriors are the horde forces in this game. They are extremely inexpensive, build time is the quickest and are easy to feed.
Warriors are used as both meat shield and as layers. In layman terms, warriors are used to attack targets to take out enemy fortifications like traps and trebuchets in large numbers BEFORE the main attacking forces consisting mainly of Archers are sent out.
Warriors are also used as in rainbow waves. These troops like workers and scouts are used in small numbers for tactical advantage as part of a single wave where archers form the majority troop type.
When the battle dynamics play out, these weaker troops will give an advantages of a round or two for the attacking archers to get within the range of the Archer's Towers. This elongates the life of the attacking archers since ATs have longer range than traditional archers. The layering troops like the Workers are at best used as suicidal forces in advance battle techniques.
Rainbow attack with workers, warriors and scouts as suicidal troops for giving tactical advantage to attacking Archers.