This professor Stone is a friend of the Order and if he thought it was wise to inform the illuminati, this means something bad is happening. Moreover, mr. Stone is missing, and nobody has news about him. So the Order has put together a bunch of braves to rescue him. For this service everybody will get something...
The Maquis, french resistance. They've been promised goods and helps for their fight against the Nazis. They are useful as North Africa is still mostly French Speaking.