In the school building taken over by GQG, an unbridgeable gulf separated Operations, the Troisieme Bureau, which occupied the class rooms, from Intelligence, the Deuxieme Bureau, which was installed in the gymnasium with the apparatus pushed against the walls and the rings tied up to the ceiling. All day the Deuxieme Bureau collected information, interrogated prisoners, deciphered documents, put together ingenious conjectures and passed on its reports to its neighbors. Consistently these indicated German activity west of the Meuse. All day Troisieme read the reports, handed them around, criticized, disputed, and refused to believe them if they pointed to conclusions that would require the French to modify their plan of offensive. Every morning at eight o'clock