But it is almost impossible to communicate with them [one's spies in the enemy camp] and receive the information they possess ... Even when the general receives from his spies information of movements, he still knows nothing of those which may since have taken place, nor of what the enemy is going finally to attempt.
![But it is almost impossible to communicate with them [one's spies in the enemy camp] and receive the information they possess ... Even when the general receives from his spies information of movements, he still knows](http://cdn.quoteddaily.com/images/antoine-henri-jomini/but-it-is-almost-impossible-to-communicate-with-them-ones-spies-in-the-enemy-camp-and-receive-the-information-they.jpg)