four o’clock
ii. , p. 278 . -RSB- Only when the wagons and field-pieces , thanks to the energy of the gunners , had commenced moving again , the emperor left the gorge and returned to his bivouac . He took his supper hastily and thoughtfully ; then he summoned all his generals and gave them their instructions for to-morrow 's battle as lucidly and calmly as ever . `` And now let us sleep , for we must be up and doing to-morrow morning at four o'clock ! '' said the emperor , dismissing his generals with a winning smile . A few minutes later profound silence reigned all around ; the emperor lay on his straw and slept . Roustan sat at some distance from him , and his dark eyes were fixed on his master with the expression of a faithful and vigilant St. Bernard 's dog .