This is the interesting bit as they had crossed the gulf several miles south of Suez by means of a sandbank that appeared at low tide and stretched about 4km right across the gulf. On the return trip light was failing and the tide rising soon the whole party was in danger. It became so deep that some of the horses had to swim with their riders clinging to there backs.
Napoleon was so grateful to a soldier who saved his friend Caffarelli's life that he promoted him to corporal and awarded him a ceremonial sabre.
Note;Unable to find recent pics of the Wells and not sure of site at which they crossed.
Source; Paul Strathern 'Napoleon in Egypt'.