Raising Armies in the Wizarding World Between Two Realms

Grow Strong First, Then Invade Other Worlds

Are there any stories involving a world invasion?

Farming, Conquest, Nests, Production, Breeding, Summoning, Wish Fulfillment, System

The protagonist has a System and can obtain various lairs by completing missions. Each lair produces a corresponding species.

Any Stories About Transmigrating Between Worlds, Building an Empire, and Conquering Other Worlds?

I mean stories where someone transmigrates to a new plane, builds an empire, then conquers other planes after a while, like My Door to the Multiverse.

Looking for Rise-to-Power Stories About Ordinary People: Wizards, Knights, and Lords

Fantasy novels about an ordinary person rising to greatness.

Any Novels About Building Huge Armies and Elite Suicide Squads?

Something like "Starting with 100,000 Dead Soldiers: A Group Raid on the Eagle Sauce Country for Free Stuff". The longer, the better.

Medieval Manor Setting, Slavery Included, but Not Brain-Dead

Survivalist, Dark, Cautious, Steady, Proficiency-Based, Ruthless, and Not a Doormat Saint

Looking for books similar to I Survive the Chaotic Age of the Supernatural by Leveling Up My Proficiency.

Lords and Knights Who Kill, Plunder, and Pillage

Long, substantial lord-themed novels