Activating this trainer:
Press F1 at main menu.
Listen for 'Trainer Activated'.
Press desired hotkey.All hotkeys can be changed on the trainer.

Trainer Options:
NumPad1: Change Gold By 5000
NumPad2: Change Provisions By 5000
NumPad3: Change Muskets By 50
NumPad4: Change Horses By 50
NumPad5: Change Soldiers Of Selected Army By 500
NumPad6: Refill HP Of Selected Army
NumPad7: Maximize Stats Of Selected Officer

Editor Options:
Misc: Gold
Misc: Provisions
Misc: Muskets
Misc: Horses
Selected Army: Soldiers
Selected Army: Maximum HP
Selected Army: Current HP
Selected Officer: Second Name
Selected Officer: First Name
Selected Officer: LEA
Selected Officer: VAL
Selected Officer: INT
Selected Officer: POL
Selected Officer: FOR

Notes:

Selected Army: Click on your army first so its HP / Soldiers panel shows up. Press hotkey or use editor. Close and open the panel again to see values have changed.

Selected Officer: In your officer list MOUSE HOVER the officer you want to edit. Wait a second or two and press hotkey or use editor. Then click on the officer in the list to see values have changed.