The condition of the Prussian camp was daily growing worse; the troops were compelled to kill their horses for food; they were drenched with heavy rains and decimated by dysentery. The King of Prussia and the Duke of Brunswick were full of resentment at the false representations of the Emigrants, who had assured them that they would have little to do but to march to Paris, loaded with the welcomes and supplies of the people. Europe was surprised at the easy repulse of the Prussians; with their reputation, it was expected that they would march rapidly on Paris, and disperse the Republican troops with scarcely an effort. But they were no longer commanded by old Frederick; and even he would have found it difficult to make his way through a country which refused the barest food for an army, and which almost to a man was in arms to resist the foe. On the 24th of September overtures were made by the Prussians for an exchange of prisoners, to which Dumouriez agreed, refusing, however, to give up a single Emigrant captive. This led to discussions on the general question, and having bargained for a safe retreat, the Allies hurried homeward with all speed. Oppressed by famine and disease, and disgusted with the Emigrants, who had led them to suffering and disgrace, they made the best of their way to the Rhine, and, at the end of October, reached Coblenz, a sorry spectacle, reduced from eighty thousand, who had entered France three months before confident of victory and fame, to fifty thousand humbled and emaciated men. If Dumouriez had had unity and subordination amongst his generals he would have been able by a forced march to outstrip the Allies, cut them off from the Rhine, and scarcely a thousand of them would have escaped. The blame thrown upon him for not thus inflicting a terrible chastisement appears unmerited.
After a visit to Paris, Dumouriez arrived at Valenciennes on the 27th of October, and prepared to follow the Austrian commander, Saxe-Teschen, who had been in vain bombarding Lille. On the 5th of November he overtook Saxe-Teschen at Jemappes. The Austrians were strongly posted, but were only about fifteen thousand men opposed to the sixty thousand French; yet they made a vigorous resistance. The battle raged from early in the morning till two in the afternoon, when the Austrians gave way. They retired, however, in good order; and Dumouriez, who had led his forces into the field singing the Marseillaise hymn, did not make much pursuit. Upwards of two thousand men are said to have fallen on each side. The battle placed all Flanders at the mercy of the French; Tournay opened its gates to Labourdonnais, and Courtrai, Menin, and Bruges sent deputies to welcome Dumouriez. Other towns rapidly followed their example. The country had been already Jacobinised, and now fancied it was going to enjoy liberty and equality in alliance with the French. The people were soon undeceived. The French had no intention of anything but, under those pretences, of subduing and preying on the surrounding nations. Flanders had speedy proofs of what every country where the French came had to expect. Jacobin Commissioners arrived from the Convention to levy contributions for the maintenance of the army, as if they were a conquered people. Dumouriez issued an order on entering Mons for the clergy to advance one year's income for the same purpose. Saxe-Teschen and old Marshal Bender evacuated Brussels, and on the 14th Dumouriez entered and took up his headquarters there. He there made heavy forced loans, and soon after arrived what was styled a Committee of Purchases from Paris, headed by Bidermann, the banker, and partner of Clavière, Minister of Finance. This Committee, on which were several Jews, made all the bargains for the army, and paid for them—not in gold but in the worthless assignats of France. The Belgians remonstrated and resisted, but in vain. Dumouriez advanced to Mechlin, having dispatched Labourdonnais to lay siege to Antwerp and Valence, and to reduce Namur. At Mechlin he found a great store of arms and ammunition, which enabled him to equip whole flocks of volunteers who came after him from France. On the 22nd, at Tirlemont, he again overtook Saxe-Teschen, who made another stout resistance, and then retired to Liége, where the Austrians made another stand on the 27th. They were repulsed, but with heavy loss on both sides; and soon afterwards, Antwerp and Valence having surrendered, all the Austrian Netherlands, except Luxembourg, were in the hands of France within a single month. Dumouriez sent forward Miranda, a Peruvian, who had superseded Labourdonnais at Antwerp, to reduce Roermond, and to enter Holland by the seizure of Maestricht; but the Convention were not yet prepared for this invasion of Holland, and Dumouriez pushed on to Aix-la-Chapelle, where he again defeated the Austrians on the 7th of December, and levying heavy contributions there, took up his winter quarters in the ancient city of Charlemagne, and within little more than a day's march of the Rhine.
Whilst Dumouriez had thus overrun the Netherlands, other French generals had been equally pushing on aggressions. Custine, with about twenty thousand men, had marched upon the German towns on the Rhine; had taken Spires, Worms, and Mayence by the 21st of October. These towns abounded with Democrats, who had imbibed the grand doctrine of the Rights of Man, and laboured, to their cost, under the same delusion as the Belgians—that the French were coming solely for their liberation and advantage. Custine advanced to Frankfort-on-the-Main, which he plundered without mercy. Custine called loudly for co-operation from Kellermann; but Kellermann not complying, he was superseded by Beurnonville, who was ordered to take Trèves. He attempted it, but too late in the season, and failed. Custine, who had advanced too far from the main army to support his position, still, however, garrisoned Frankfort with two thousand men, and took up his own quarters at Ober-Ursel and Homburg, a little below Frankfort, in the commencement of December.
This was a broad indication of the French seizing, under the pretence of propagating liberty, on what had been called the natural boundaries of France in the time of Louis XIV.,—namely, the Rhine and the Alps, thus including Belgium, part of Holland, Nice, and Savoy. They dispatched emissaries to Victor Amadeus, the King of Sardinia, offering to drive the Austrians out of Italy, and give Italy to the Italians. As they had, however, previously sent numbers of their Jacobin propagandists to inoculate his people with Republicanism, the king refused their offers, and forbade General Semonville to enter the country. On this, the Convention proclaimed war against him, and ordered Montesquieu to invade Nice and Savoy. With an army of fifteen thousand men and twenty pieces of artillery, Montesquieu entered Savoy, and the few Savoyard troops being unable to compete with him, the people, moreover, being already prepared by French Republicans, he overran the country, entered Chambéry in triumph, and occupied the province to the foot of Mont Cenis. Elated by the successes of these campaigns, the French Convention passed a decree, declaring that it would grant succour and fraternity to all peoples desirous of recovering their liberty; it ordered its generals to give such aid to all citizens who were, or might be, harshly treated on account of their desire for liberty; and the generals were instructed to post this decree in all public places to which they should carry the arms of the Republic. Two days afterwards Savoy was formed into a new department as the Department of Mont Blanc.
On the 21st of September the Convention had met in the Tuileries. The first act of the Convention was to send to the Legislative Assembly the notification of its formation, and that the existence of that body was, as a matter of course, at an end. They then marched in a body to the Salle de Manege, and took possession of it. The Girondists now appeared on the Right, the Jacobins on the Left, under the name of the Mountain, and the Centre, or Moderates, took the name of the Plain. The first speech and motion was made by Manuel, proposing that the President of the Convention and of France should be lodged in the Tuileries, attended by all the state which had accompanied the king, and that, whenever he appeared in the House, all the members should receive him standing. The motion was received with a storm of reprobation, and dismissed. The second motion, made by Collot d'Herbois, was for the immediate abolition of royalty. He was seconded by the Abbé Gregoire, and it was unanimously abolished accordingly. No time was lost in communicating this fact to the royal family in the Temple.
The Convention proceeded to debate the question of Louis's trial. On the 6th of November Valazé, a Girondist, presented to it the report of the Committee of Twenty-Four. This report charged Louis Capet with high treason against the nation, and declared that his punishment ought to be more than simple deposition. The next day Mailhé, another Girondist, presented the report of the Committee of Legislation, and accompanied it by a speech, in which he accused Louis of all the crimes which had been committed during the Revolution, and recommended the trial of Charles I. as the model for his trial. The queen, he said, ought to be tried by an ordinary tribunal, observing that the heads of queens were no more inviolable than other women's heads. This was as plainly intimating the wishes of the Girondists for the execution of the king and queen as any Jacobins could do. In fact, so completely did his remarks coincide with the views of the Jacobins, that he was applauded by Jacobins, Girondists, and Plain. It was voted that the report should be printed and circulated through the Departments; that a committee should be appointed to collect the necessary papers and other evidence; that these should be submitted to Louis, or his counsel; that the Convention should fix the day of trial, and should pronounce sentence by every member voting separately, and aloud. It was decreed that Louis should be brought to the bar of the Convention on the 26th of December. The king's demand to be allowed counsel having been conceded, he began to prepare his defence. In the afternoon of the 16th, four commissioners, who had been members of the Committee of Twenty-Four, appeared, and presented him with a copy of his impeachment, and also submitted to him a number of papers that were to be produced against him. At half-past nine in the morning of the 26th all Paris was again under arms, and Chambon, the mayor, appeared at the Temple, attended by Santerre with a strong force. Louis was conducted to the mayor's carriage, and was thus guarded to the Feuillants, the House of the Convention.
At the close of an admirable defence by his counsel Desèze, Louis rose and read the following few remarks, which he had prepared:—"My means of defence are now before you. I shall not repeat them. In addressing you—perhaps for the last time—I declare that my conscience reproaches me with nothing, and that my defenders have told you the truth. I was never afraid that my conduct should be publicly examined; but it wounds me to the heart to find, in the act of accusation, the imputation that I caused the blood of the people to be spilt; and, above all, that the calamitous events of the 10th of August are attributed to me.
"I confess that the multiplied proofs which I have given at all times of my love for the people, and the manner in which I have always conducted myself, ought, in my opinion, to demonstrate that I was not afraid to expose myself in order to prevent bloodshed, and ought to clear me for ever from such an imputation."
On the 14th of January, 1793, the members of the Convention met, amid a mob surrounding the House, and demanding, "Death to the tyrant! Death to him or to us!" Other crowds crammed the galleries. The debate, which had begun immediately after the king's speech, was renewed, and furious menaces and recriminations between the Girondists and the Mountain were uttered. At length the Convention reduced all the questions to these three: 1st. Is Louis Capet guilty of conspiring against the liberty of the nation and the safety of the State? 2nd. Shall the judgment, whatever it be, be referred to the sanction of the people? 3rd. What punishment shall be inflicted on him?