Personnel
Troops and equipment are separate entities and require different resources to create. While equipment mostly requires industry, Personnel require wealth.
Training Costs
Low Training X wealth per batch, effectively instant training (less than a quarter)
National Guard, Home Guard, Militia etc. Often Part Time
Normal Training X4 wealth per batch at 1 quarters training or X8 wealth for less than a quarters training
Regulars, yeomanry
Extensive Training X8 Wealth per batch for 1 quarters trainings or x16 Wealth for less than a quarters training
US Marines, Roman Legionares.
Excellent training X16 wealth per batch for 2 quarters training or X32 wealth 1 quarters training
Knights, Spartans, etc.
Elite Training X32 Wealth per batch for 3 quarters training or X64 Wealth for 2 quarters training
Royal Marine Commandos, Special Forces.
Special training
Ground Unit Training
Terrain Training Adds X Wealth and 1 Quarter or X2 Wealth
MOUT, Jungle, etc.
Guerrilla Training Adds X Wealth or 1 Quarter
Peoples War
Recon Training Adds X2 Wealth and 1 Quarter or X4 Wealth
Marine Force Recon, Spetnaz
Assault Training Adds X2 Wealth and 1 Quarter or X4 Wealth
Storm Troopers
SPF Training Adds X4 Wealth and 2 Quarters
Who Dares Wins
Air Training
Space Training
Augmentation
Many powers like to surgically, chemically, genetically or magically their troops.