Generals limit the number of soldiers you may have.

You may have 100 soldiers (base amount) + 100 more soldiers for each General you have.

A new General spot unlocks each time you defeat a Barbarian Outpost.

You may either hire Neighbors for free, or spend 3 PFC to hire a computer generated General (also known as an NPC for Non-Player Character).

The message that a Neighbor has become a General for you is yellow.

General message yellow