one o'clock
On the afternoon of the 7th of April , the Anglo-Egyptian force marched out . They started at five in the afternoon , and halted at seven . The horses were first taken down to water , the infantry by half battalions ; all then lay down to sleep . At one o'clock the word to advance was passed round quietly . The moon was full and high overhead , so there was no difficulty in avoiding obstacles . Each brigade marched in square , accompanied by the guns and the Maxims , and the camels with provisions and spare ammunition . At four o'clock they halted again .