"The General series was originally published as five separate novels: The Forge, The Hammer, The Anvil, The Steel, and The Sword. Conqueror is the second and concluding part of the Raj Whitehall saga, which began in the first compendium volume, Warlord."
The anvil
The steel
The sword.
Conqueror by S. M. Stirling. ISBN 074343594X. Published by Baen in 2003. Publication and catalogue information, links to buy online and reader comments.