All at once, the scene became more animated and exciting. Drums, bugles, and trumpets were heard over the whole Field, sounding the "Assembly"; and never was the call to arms, in either Army, responded to with greater zeal, alacrity, and cheerfulness. While the Regimental inspections, tellings off, and preparatory arrangements of detail were proceeding, Staff Officers were seen galloping in various directions; and, shortly afterwards, the different Brigades, which, by their bivouacs had but faintly and irregularly traced the Line of Battle taken up by each Army, were moved and distributed in the precise order prescribed by the illustrious Chiefs who had on that day, and for the first and only time, met to measure swords. * * * * * The Field of Waterloo is intersected by two high roads (_chaussées_) conspicuous by their great width and uniformity, as also by the pavement which runs along the centre of each. These two roads, the eastern one leading from Charleroi and Genappe, and the western from Nivelles, form a junction at the Village of Mont St Jean, whence their continuance, in one main road, is directed upon the capital of Belgium. In front of the above junction; and offering, as it were, a natural military position for the defence of this approach to Brussels, a gentle elevated ridge of ground is intersected, at right angles, by the Charleroi road, about 250 yards north of the Farm called La Haye Sainte, and follows a westerly direction until about midway between the two high roads: whence it takes a south-westerly course, and terminates abruptly at its point of intersection with the Nivelles road, about 450 yards north of Hougomont, a Country Seat, with Farm, Offices, Gardens, Orchards, and Wood. On the east side, the ridge extends itself perpendicularly from the Charleroi road until it reaches a point, distant about seven hundred yards, where, elevating itself into a Mound or Knoll, it overlooks the Hamlet of Papelotte; and thence, taking a north-easterly course, expands into an open plateau. This ridge constituted the position of the First Line of the Duke of WELLINGTON's Army, which Line is more distinctly defined by a road, entering on the east side, from Wavre, by Ohain, and winding along the summit of the ridge until it joins the Charleroi high road just above La Haye Sainte; from which point of junction a cross road proceeds along the remaining portion of the ridge, and thus connects the two high roads with each other. The undulations of the ground in rear of this position were admirably adapted to the disposition of the Second Line and Reserves, presenting a gently inclined reverse slope along nearly the whole extent of the ridge, with fine open and convenient stations for Cavalry, perfectly concealed from the Enemy's observation.