This encouraged the enemy to deliver the blow that had so long been feared. The combined forces, under Devins,--the Sardinians, the Austrian auxiliary corps and the newly arrived Austrian main army,--advanced together and forced the French right wing to evacuate Vado and the Genoese littoral. But at this juncture the conclusion of peace with Spain released the Pyrenees armies, and Scherer returned to the Army of Italy at the head of reinforcements. He was faced with a difficult situation, but he had the means wherewith to meet it, as Napoleon promptly pointed out. Up to this, Napoleon said, the French commanded the mountain crest, and therefore covered Savoy and Nice, and also Oneglia, Loano and Vado, the ports of the Riviera. But now that Vado was lost the breach was made. Genoa was cut off, and the south of France was the only remaining resource for the army commissariat. Vado must therefore be retaken and the line reopened to Genoa, and to do this it was essential first to close up the over-extended cordon--and with the greatest rapidity, lest the enemy, with the shorter line to move on, should gather at the point of contact before the French--and to advance on Vado. Further, knowing (as every one knew) that the king of Sardinia was not inclined to continue the struggle indefinitely, he predicted that this ruler would make peace once the French army had established itself in his dominions, and for this the way into the interior, he asserted, was the great road Savona-Ceva. But Napoleon's mind ranged beyond the immediate future. He calculated that once the French advanced the Austrians would seek to cover Lombardy, the Piedmontese Turin, and this separation, already morally accomplished, it was to be the French general's task to accentuate in fact. Next, Sardinia having been coerced into peace, the Army of Italy would expel the Austrians from Lombardy, and connect its operations with those of the French in South Germany by way of Tirol. The supply question, once the soldiers had gained the rich valley of the Po, would solve itself. Loano. This was the essence of the first of four memoranda on this subject prepared by Napoleon in his Paris office. The second indicated the means of coercing Sardinia--first the Austrians were to be driven or scared away towards Alessandria, then the French army would turn sharp to the left, driving the Sardinians eastward and north-eastward through Ceva, and this was to be the signal for the general invasion of Piedmont from all sides. In the third paper he framed an elaborate plan for the retaking of Vado, and in the fourth he summarized the contents of the other three. Having thus cleared his own mind as to the conditions and the solution of the problem, he did his best to secure the command for himself.