In 1804, the French General Auguste de Marmont established an army camp ("le Camp d'Utrecht") in this central location in the Batavian Republic, the present Netherlands, where over a period of several months he forged together various battalions into a large, well-trained army, capable of beating the British enemy should there be any repetition of the invasion of 1799. In the autumn of 1804, satisfied with the military power of the new army, and to occupy his bored soldiers, Marmont had his soldiers build an earth and turf monument inspired by the Great Pyramid of Giza, which Marmont had seen in 1798 during Napoleon's Egyptian campaign. Even the erosion-exposed stepped surface was imitated. Construction lasted 27 days. The pyramid hill was 36 metres high, and surmounted by a 13-metre-high wooden obelisk. It was named "Mont Marmont" or "Marmontberg".