Napoleon reviewing his troops on the morning of Waterloo. The soldiers' enthusiasm and cries of "Vive l'empereur" bolstered morale and served to intimidate the Anglo-Dutch troops, not two miles away. Torrential rain had turned the soil soggy, making the effective deployment of artillery impossible, which is why Napoleon decided to wait until ca. 11:30 and the ground had sufficiently hardened. Had he known the Prussians were already underway he might not have waisted valuable time.