The mind controlled soldiers will eventually revert to normal (after you meet one of the 3 who cast the spell), but you do not get any experience points that way.
Go check out the billboard by the castle stormfist entrance, if you haven't done so since entering that camp.

Hit the A key to bring up the automap directly, then zoom out to spot flagged locations easier.
From the manual;
Keyboard ShortcutsSPACE | Pause/Unpause the game |
CTRL | Target closest enemy to mouse cursor. |
CTRL | When dragging multiple objects from your inventory in the world and releasing the mouse cursor while holding CTRL pressed, split up the objects. |
SHIFT | When holding shift and moving the mouse cursor to the side of the screen, you can scroll away from your player character. Release shift to jump back to your player character. |
ALT | Show object boxes describing interesting objects in the environment |
R | Toggles auto-run mode on/off. When toggled on, a left mouse click causes your character to run towards the designated point instead of walking to it. |
C | Toggles combat mode on/off. draw your weapon (if you have none, show your fists) or put down your weapons |
M | Toggle mini map Open the inventory (back pack) |
E | Open the equipment plate |
T | Open the player statistics plate |
CTRL+L | Quick load |
CTRL+S | Quick save |
L | Open the "Load Game" screen |
S | Open the "Save Game" screen |
ESC | Back to main menu |
Q | Open the quest log (diary) |
A | Open the auto map (diary) |
CTRL+F12 | Assign hotkeys (F1-F12) |
CTRL+F11 | Create a screenshot in the "Captures" sub directory |