Mack's plan of operations was first submitted to the judgement of the Archduke Charles, the Prince of Coburg, Count Mercy, the Prince of Orange, and the Duke of York, at Brussels. Next, he proceeded, along with Counts Stahremberg and Merveldt to London, and on 13th February unfolded his plan to Pitt, Grenville, and Dundas. The Duke of York had preceded him by two days, but was absent from this conference. It became piquant when Pitt "playfully" remarked to Mack that a great general had recently arrived at London whose appointment to the command of the British force in Flanders would doubtless meet with his warm approval. After a little more fencing, Pitt gave the name of the Marquis Cornwallis, who had just returned from his Viceroyalty in India. Mack by no means welcomed the proposal, and made the irreverent remark that the best General, after fighting elephants in India, would be puzzled by the French. Pitt thereupon observed that the Duke of York had not the confidence of the army, to which Mack and Merveldt replied by praising his character, and decrying his critics as a set of influential but inexperienced youths.

The matter then dropped, and the Duke was present at the conference on the morrow. Finally, Austria and England bound themselves to make great efforts, the latter with at least 40,000 men, either British or German auxiliaries. The Prussian and Dutch forces were to be increased so as to bring the grand total to 340,000 men. Of this large number 170,000 were to operate in Flanders with a view to a march on Paris; 35,000 held the country along the right bank of the Meuse; 15,000 protected Luxemburg; 65,000 Prussians prolonged the line eastwards to the Rhine, which was guarded by 55,000 Austrians. Certainly the plan called for a third of a million of men, if all the frontier strongholds of Flanders were to be taken before the march to Paris began. In regard to details, Pitt, Grenville, and Dundas urged that Cornwallis should command the British and subsidiary forces defending West Flanders—a suggestion which George III warmly approved, on condition that the Duke of York, serving with the main body nearer the centre of the long line, had a number of troops proportionate to his rank and talents.

Thus the effort of Pitt and his colleagues to shelve the Duke of York was foiled. On another and weightier matter he had his way. Coburg's conduct had been so languid and unenterprising as to lead to urgent demands for his recall; and it was understood that the Emperor Francis would take the command, with Mack as Chief-of-Staff and virtual director of the campaign. Pitt expressed to Mack his marked preference of this arrangement to the alternative scheme, the appointment of the Archduke Charles; for the extreme youth of the Archduke might hinder a good understanding between him and his subordinate and senior, the Duke of York. Seeing, then, that Mack declined absolutely to serve under Coburg,[346] nothing but the presence of the Emperor could end the friction in Flanders.

But alas for the monarchical cause! At the very time when the Kaiser was to set out for Brussels, alarming news came from Cracow. The temper of the Poles, heated by the wrongs and insults of two years, burst forth in a rising against the Russian and Prussian authorities. Kosciusko, the last hope of Poland, issued an appeal which nerved his countrymen to dare the impossible. Rushing to arms, they astonished the world by exhibiting in the last throes of their long agony a strength which, if put forth in 1791, might have saved their land from spoliation. Even now their despairing struggles turned towards Warsaw much of the energy which should have trended towards Paris; and thus, once again, and not for the last time, did the foul crimes of 1772 and 1793 avenge themselves on their perpetrators. The last struggles of Poland helped on the French Republic to its mighty adolescence. Finally, on 2nd April, Francis II departed for Brussels. Thugut set out nine days later; and in the interval, on the plausible pretext that Prussia would seize more Polish land, he stopped the reinforcements destined for Flanders. He also urged the Czarina on no account to allow a partition of Poland.[347]

While the Continental States were thus pulling different ways, British diplomacy won two notable triumphs at The Hague. By dint of threatening Haugwitz with the rupture of the whole negotiation, Malmesbury induced that Minister to countermand the order for the retirement of the Prussian troops, which had already begun. He thereby saved the Allies in the Palatinate and Flanders from very serious risks in view of the gathering masses of the French.[348] Further, on 19th April, he induced Haugwitz to sign a treaty which promised to revivify the monarchical cause. Prussia agreed to furnish, by 24th May, 62,400 men, who were to act conjointly with the British and Dutch forces in Flanders. For this powerful succour the two Maritime States would pay a subsidy of £50,000 a month, besides the cost of bread and forage, reckoned at £1 12s. per man per month, and £300,000 for initial expenses. As Great Britain and Holland wholly supported this army, they prescribed the sphere of its operations, and retained any conquests that it might make. The treaty was for the year 1794; but its renewal was stipulated in a separate article. Prussia of course still supplied to Austria the 20,000 men due by the treaty of 1792.

If Malmesbury had not induced Haugwitz to sign the treaty then, it would never have been signed at all. Almost alone in the Court of Berlin, Frederick William desired to continue the struggle. His uncle, Prince Henry, had always opposed war with France, and long before Valmy, had prophesied that her untrained but enthusiastic levies would be a match for any professional army. His influence and that of the Duke of Brunswick, Lucchesini, and Möllendorf, were still cast against the western crusade, so that Grenville believed Prussia to be dragging on the negotiation solely in order to embarrass her Allies by throwing it up early in the campaign.[349] Moreover, Malmesbury's treaty contained its own death warrant. A Great Power can ill afford to hire out its troops to non-military States, unless they lessen the humiliation of such a proceeding by according the utmost possible freedom. But the Hague Convention specified that the subsidized Prussian army must operate where the paymasters directed; and they now decided on removing it from the Palatinate to the valley of the Meuse near Dinant, or even further west, provided that Austria could fill up the gap thus left in the Palatinate.[350] In passing, I may note that this important decision was due to George III, as appears in Grenville's final instruction to Malmesbury: "The King's determination is finally taken not to agree to any plan by which the Prussians would be employed more to the left than the country of the Meuse."[351] No one who knows the rigour of the King's resolves can doubt that he was responsible for a determination fraught with unexpected issues.

It is alien to my purpose to recount the ensuing disputes. I can glance only at the part played by Pitt. At one point his conduct was weak and dilatory. Early in May, when Malmesbury proceeded to London for the purpose of securing the ratification of the treaty and the payment of the first subsidy to Prussia, he encountered most annoying delays. Pitt and Grenville left him severely alone, probably because they were then so occupied with the coercion of the English Jacobins as to have no time for the plans which promised the overthrow of the French Jacobins. Another topic engaging their attention was the hoped-for coalition with the Portland Whigs, which shrouded from their gaze the needs of the European Coalition. However we may explain the fact, it is certain that during sixteen days (6th to 22nd May) Malmesbury, despite his urgent entreaties to Grenville, could procure neither instructions as to his future conduct, nor a promise for the payment of the first Prussian subsidy. News of a British disaster in Flanders at last quickened the laggards of Whitehall. On the 23rd Malmesbury gained his heart's desire, and set out for the Prussian headquarters on the following day.[352] Meanwhile, owing to this long delay (one of the most discreditable incidents in the careers of Pitt and Grenville), Prussia took no steps to carry out the terms of the compact. It so happened that on 24th May her army in the Palatinate, commanded by Möllendorf, gained a victory over the French at Kaiserslautern in the Palatinate; but that event set them the more against Malmesbury's treaty, which implied a march of some 120 miles through difficult country, and across an enemy's front.

Moreover, as has been hinted, reverses had by this time overtaken the right wing of the Allies, in West Flanders. At the centre, near the Sambre, the campaign opened with promise, the British cavalry gaining a brilliant success at Bethencourt. But Carnot, having drawn upon the French troops in Lorraine and the Palatinate, threw his heaviest columns at points on the extreme west of the French front, the result being that at Turcoing the Republicans shattered the isolated corps of the Duke of York and General Otto (18th May). The successes of the Prussians and of the Austrian army, on the Sambre, saved the situation for a time. But the prospects even in that quarter were overclouded by the resolve of the Emperor Francis to leave his army and return to Vienna. News of the critical state of affairs in Poland prompted this decision, the results of which soon appeared in quarrels at headquarters and discouragement in the rank and file. The Austrian soldiery saw in the withdrawal of the Kaiser the end of his rule in the Netherlands. They were right. The counsels of Thugut had now prevailed. South Poland was to be the prize of the Hapsburgs. The tiresome and distant Netherlands were to be given up, the pecuniary support of England, however, being assured as far as possible by a feint of defending them.

Here we have the explanation of the half-hearted effort made by the Austrians at Fleurus. There was every reason why Coburg, now again the commander of the main Austrian force, should strike vigorously at the French force besieging Charleroi. A decisive victory in front of Charleroi would not only save that place, but would give pause to the French forces further west, now advancing rapidly towards Ghent. Accordingly Coburg, advancing as far as Fleurus, hard by the village of Ligny, attacked the Republicans. He had on the whole the best of the fight, when the arrival of news of the surrender of Charleroi led him most tamely to call off his men and fall back. The retirement took place in discreditably good order, not a single gun being lost (25th June 1794). A bold leader would have beaten the enemy and probably would have saved Charleroi. With the same excess of prudence Coburg conducted his retreat, several positions and strongholds being abandoned in craven fashion.

Meanwhile Pitt and Dundas made great efforts to save West Flanders. In haste they despatched reinforcements to Ostend; and among the regiments which landed there on 25th and 26th June was the 33rd, commanded by Colonel Wellesley. The future Duke of Wellington found the small garrison of Ostend in a state of panic; and his chief, the Earl of Moira, deemed it best to meet the French in the open. By great good fortune Moira, with most of the regiments, reached Bruges, and beyond that town came into touch with Clerfait's force. Wellesley, taking ship, sailed round to Antwerp and reached that column by a safer route and earlier than his chief. His action is characteristic of a judgement that never erred, a will that never faltered. In this campaign, as he afterwards said, he learnt how not to make war. But success not seldom crowns the efforts of him who has the good sense to probe the causes of failure. Certainly it rarely comes to British commanders save after very chastening experiences; and Wellesley now took part in what was, for the Austrians, a fore-ordained retreat. Despite the manly appeals of the Duke of York, Coburg declined to make a stand on the fateful ridge of Mount St. Jean; and the name of Waterloo appears in the tepid records of 1794 at the head of a plan for arranging the stages of the retreat (5th July) which the nervousness of Coburg soon condemned to the limbo of unfulfilled promises.[353] Is it surprising that, two days later, the Duke of York declared to him that the British were "betrayed and sold to the enemy"? Worse still, the garrisons of Valenciennes, Condé, Quesnoy, and Landrecies, amounting to nearly 11,000 men, were now left to their fate.