Third: The Austrian rear guard was unnecessarily large. It consisted of fifty-five thousand soldiers. At present it is not the purpose to point out in detail the errors that Melas committed by leaving so large a force inactive in Italy, but rather to show that this force was larger than necessary, and that the surplus troops composing it could have been used to much greater advantage along the Var. The necessity for a strong rear guard in northwestern Italy becomes apparent when it is remembered that Thurreau was occupying the Mont Cenis Pass with four thousand men, and might at any time attempt to issue therefrom upon the flank and rear of Melas as he advanced towards the Var. Inasmuch as Thurreau's detachment occupied a favorable position from which to attack the Austrians, it was necessary, perhaps, that Melas should leave ten or twelve thousand men to hold this force in check. There was, too, some likelihood that French troops might issue into Italy from Switzerland by the St. Gothard Pass or the Simplon; a few thousand troops were therefore needed in that vicinity to give warning in case the French attempted to enter Italy from that direction. At this time Melas doubted the existence of the Army of Reserve; but, had he believed it to be a reality, doubtless he would not have expected Bonaparte to cross the Great St. Bernard. And even had he expected him from that direction, perhaps no better arrangement of his rear guard could have been made than to leave five thousand men before the St. Gothard, five thousand before the Great St. Bernard, and twenty thousand near Turin with their left flank well extended towards the Mont Cenis Pass. In this central position the rear guard could march rapidly to attack the French, should they enter Italy by any one of these passes, and could hold them in check till a larger Austrian force could be concentrated. Had Melas known that Bonaparte expected to cross the Alps with the Army of Reserve, no better method could have been devised to prevent the projected march of Bonaparte than to force the Var and invade France. This undertaking being accomplished, there would be no further danger of Bonaparte's crossing the Alps; for he must then fight on the west side of the mountains to save France from invasion. The surest way to protect the Austrian rear was to force the Var. Every spare man should have been directed there. Twenty thousand could have held Genoa; thirty thousand would have sufficed for a rear guard; and of the remaining seventy thousand, probably fifty or sixty thousand could have united in an attack upon Suchet. Fourth: Had the English corps of twelve thousand men been thrown upon the coast of France just in rear of Suchet, while sixty thousand Austrians were attacking him in front, who can doubt what the result would have been? Suchet had but fourteen thousand men; and against such overwhelming odds he would have been compelled to yield.