Cæsar received this information at Amiens towards the eleventh hour of the day (four o’clock in the afternoon). He had only at hand three legions--that of Trebonius, at Amiens; that of M. Crassus, whose quarters were at Montdidier, in the country of the Bellovaci, at a distance of twenty-five miles; and lastly, that which, under C. Fabius, was wintering in the country of the Morini, at Saint-Pol.[437] (_See Plate 14._) He despatched a courier to Crassus, charged with delivering to him his order to start with his legion in the middle of the night, and join him in all haste at Amiens, to relieve there the legion of Trebonius. Another courier was sent to the lieutenant C. Fabius, to direct him to take his legion into the territory of the Atrebates, which Cæsar would cross, and where their junction was to be effected. He wrote similarly to Labienus, to march with his legion towards the country of the Nervii, if he could without peril. As to the legion of Roscius and that of Plancus, which were too far distant, they remained in their quarters. Crassus had no sooner received his orders than he began his march; and next day, towards the third hour (ten o’clock), his couriers announced his approach. Cæsar left him at Amiens, with one legion, to guard the baggage of the army, the hostages, the archives, and the winter provisions. He immediately started in person, without waiting for the rest of the army, with the legion of Trebonius, and four hundred cavalry from the neighbouring quarters. He followed, no doubt, the direction from Amiens to Cambrai, and made that day twenty miles (thirty kilomètres). He was subsequently joined on his road, probably towards Bourcies, between Bapaume and Cambrai, by Fabius, who had not lost a moment in executing his orders. Meanwhile arrived the reply of Labienus. He informed Cæsar of the events which had taken place among the Eburones, and of their effect among the Treviri. These latter had just risen. All their troops had advanced towards him, and surrounded him at a distance of three miles. In this position, fearing that he should not be able to resist enemies proud of a recent victory, who would take his departure for a flight, he thought that there would be danger in quitting his winter quarters.