To this centre, Wellington added one of Chassé’s brigades taken from the right wing, and one of Wincke’s brigades taken from the left wing, plus Clinton’s division. To his English, to the regiments of Halkett, to the brigades of Mitchell, to the guards of Maitland, he gave as reinforcements and aids, the infantry of Brunswick, Nassau’s contingent, Kielmansegg’s Hanoverians, and Ompteda’s Germans. This placed twenty-six battalions under his hand. “The right wing,” as Charras says, “was thrown back on the centre.” An enormous battery was masked by sacks of earth at the spot where there now stands what is called the “Museum of Waterloo.” Besides this, Wellington had, behind a rise in the ground, Somerset’s Dragoon Guards, fourteen hundred horse strong. It was the remaining half of the justly celebrated English cavalry. Ponsonby destroyed, Somerset remained.
The battery, which, if completed, would have been almost a redoubt, was ranged behind a very low garden wall, backed up with a coating of bags of sand and a large slope of earth. This work was not finished; there had been no time to make a palisade for it.