The Campaign of Marengo, With Comments

by Herbert H. Sargent

Notwithstanding the efforts of Masséna, his soldiers were in a destitute condition. Only the bare necessaries of life were furnished them. Ammunition alone was sent them in abundance. Though the Army of Italy numbered but forty thousand men and was opposed to one hundred and twenty thousand Austrians, Bonaparte would not re-enforce it by a single soldier. In fact, all the men and matériel collected in France were used to strengthen Moreau's army and the Army of Reserve. The Army of Italy was left to fight, as best it could, a force overwhelmingly superior in numbers, matériel, and equipment.

At the opening of the campaign, the condition of the Army of Italy was such that but thirty-six thousand men were fit for active service. Of this force, four thousand under Thurreau were in the Mont Cenis Pass, so that there remained but thirty-two thousand with which to hold the Apennines and Maritime Alps from Genoa to the Col di Tenda. Masséna's right wing, numbering eight thousand under Miollis, held the fortified city of Genoa, which, owing to the outlying works and natural obstacles surrounding it, was an exceedingly strong place; his centre, twelve thousand strong, commanded by Soult, defended the Bochetta Pass, which opens upon Genoa, and the Cadibona Pass, which opens upon Savona; his left, consisting of twelve thousand under Suchet, occupied the Col di Tenda, Nice, and the line of the Var.

Inasmuch as the active French army directly in front of Melas numbered only thirty-two thousand soldiers, and was spread out from Genoa to Nice, he calculated that by directing twenty-five thousand men upon Genoa and a column of forty thousand upon the centre of the French line, he could hold in check the French right, while he broke through their centre and cut the Army of Italy in two. This feat accomplished, he expected that his left wing of twenty-five thousand, with the aid of the British fleet, would be able to enclose, blockade, and capture Genoa, while his right wing of forty thousand was forcing the remainder of the Army of Italy across the Var.

On the French side, the plan of campaign that offered the best results was one that Bonaparte himself had originated. He ordered Masséna to leave only small detachments at the passes of Tenda, Ormea, and Cadibona, and to concentrate twenty-five or thirty thousand men at Genoa. In written instructions to Masséna, the First Consul set forth his views as follows:—

"Take care," said he, "not to extend your line too widely. Put but few men on the Alps, or in the defile of the Tenda, where the snow will protect you. Leave some detachments around Nice and in the forts in its vicinity; keep four fifths of your force in Genoa and its neighborhood. The enemy will debouch upon your right in the direction of Genoa, on your centre in the direction of Savona, and probably on the two points at once. Refuse one of the two attacks, and throw yourself with all your forces united upon one of the enemy's columns. The nature of the ground will not allow him to avail himself of his superiority in artillery and cavalry; he can only attack you with his infantry, and yours is infinitely superior to his; and, favored by the nature of the place, it may make up for the deficiency in number. In that broken country, if you manœuvre well, with 30,000 men you may give battle to 60,000. In order to carry 60,000 light-armed troops into Liguria, Melas must have 90,000, which supposes a total army of 120,000 at least. Melas possesses neither your talents nor activity; you have no reason to fear him. If he appear in the direction of Nice, you being at Genoa, let him come on, stir not from your position; he will not advance far if you remain in Liguria, ready to throw yourself upon his rear, or upon the troops left in Piedmont."

Though this plan was excellent for holding in check the Austrians for a time, unfortunately it was beyond the execution of Masséna. Provisions were so scarce in Genoa that it would have been foolish to concentrate nearly the whole of the Army of Italy there. To feed his army was the difficulty that confronted Masséna. For this reason he scattered his troops along the Apennines, and occupied the seaboard from Genoa to Nice. In this position, his soldiers could seize the meagre supplies that the barren country afforded, and could more easily obtain provisions direct from France. Though it is doubtful whether Masséna fully appreciated the advantages of Bonaparte's plan, nevertheless, he would probably have carried it out, had he not been prevented from doing so by a lack of provisions, and by the beginning of hostilities much earlier than either he or Bonaparte expected.

On the 5th of April, Melas, leaving thirty-five thousand Austrians under General Kaim to occupy the fortresses of northwestern Italy and to watch the passes of the Alps, advanced with sixty-five thousand[5] to attack Masséna. His forces were divided into three columns: General Ott with fifteen thousand men ascended the Trebbia and presented himself before the defiles of the mountains which shoot off from the main chain of the Apennines and extend along the east side of Genoa; General Hohenzollern with ten thousand marched upon the Bochetta Pass on the north side of the city; and Melas himself with forty thousand ascended the Bormida, and attacked the forces of Soult and Suchet along the Apennines and Maritime Alps. Confining his principal attack to the centre of the French line, Melas succeeded, after hard fighting, in forcing his way through the Cadibona Pass, which movement cut in two the Army of Italy and separated Soult from Suchet. The former fell back towards Genoa; the latter, towards Nice. In these engagements both sides fought fiercely. Though the French had the advantage of position, they were compelled to give way before the onslaughts of superior numbers.

At the Bochetta Pass, the attack made by General Hohenzollern was repulsed; but on the east side of Genoa the French, numbering less than four thousand, could not hold the defiles and crest of the Apennines against General Ott's force of fifteen thousand. The Austrians drove the French across the mountains, then surrounded and invested the French forts that protected the city on that side. By this successful attack, General Ott gained a foothold within cannon-shot of the walls of Genoa.

Thus far Melas had been successful. The first great step in his undertaking had been accomplished. Now he could close in upon Masséna with his left wing, force him back into Genoa, and hold him there as in a vise; while with his right, strongly re-enforced, he could advance against Suchet, perhaps crush him or drive him across the Var into France.

Meanwhile Masséna was in a precarious situation. His army was cut in two; his communications with France were severed. In the face of superior numbers, Suchet was being driven back towards Nice, and Soult was withdrawing the shattered remains of his forces towards Genoa. In front of the city and along the Italian shore, the British fleet was actively supporting the operations of Melas. On the east side of the city, the Austrians had gained the crests of the mountains; and at the Bochetta Pass they were ready to make another attack, which would prove successful. In fact, Masséna was surrounded. The allies were closing in upon him. Already their guns could be heard at Genoa; soon they might force him inside the walls of the city.