Louise had never meddled in foreign politics. She had been, she designed to be, only the "Landesmutter," and even when the murder of the Duc d'Enghien, seized on Prussian soil, aroused in Berlin a storm of indignation, in which she fully shared, she yet sympathized in the mental distress which found vent in her husband's often-repeated words, "I cannot decide for war."
At last he did decide. In October, 1805, Napoleon ordered Bernadotte to march his army corps through Anspach. This contemptuous comment on Prussia's ten-years' forbearance was too much for the king's pride. Armies were raised in Franconia, Saxony, Westphalia, and while the excitement was at fever point the czar came to Berlin. All his rare charm of manner was brought to bear, and at midnight, in the presence of Louise, the two monarchs, standing with clasped hands beside the tomb of the great Friedrich, solemnly pledged themselves to a close alliance.
Alexander departed to lead his Russians to Moravia, and Friedrich Wilhelm despatched a protest to the French camp; but the envoy, Haugwitz, arriving on the eve of Austerlitz, waited the issue of the battle, and then, withholding his packet, proposed to the victor a fresh treaty with Prussia. There was wrath in Berlin when his doings became known. The king at first disowned the disgraceful compact, but Austerlitz had just taught him what Napoleon's enemies might expect. French troops were already massing on his frontier, and in an evil hour he broke faith with the czar! To Louise, who neither feared foe nor deserted friend, that was a bitter time—doubly sad, indeed, since most of the long winter was spent by the dying bed of her youngest child. When she lost him her own strength broke down, and the doctors ordered her away to drink the Pyrmont waters. In the late summer she was able to rejoin her husband, and he had startling news to tell, for war with France was close at hand.
Since Haugwitz's fatal agreement Napoleon had heaped injuries on Prussia. Now, at least, king and people were of one mind. The young Prussian officers sharpened their swords on the French ambassador's window-sills, patriotic songs were hailed with thunders of applause in street and theatre, and when the queen, clad in the uniform of her own Hussars, rode at their head through the city, she was greeted with passionate loyalty.
Unhappily, Friedrich Wilhelm, hitherto too tardy, was now too precipitate. He had been passive while France crushed Austria, and Austria, suspicious and disabled, neither could nor would assist him. Russia, with better reason for distrust, responded generously to his appeal, but he did not wait for her promised aid. For all his haste, Napoleon, with 180,000 men, was nearing the Thuringian Forest before the Prussian troops left Berlin. They were very confident, those Prussian troops, and the shouting multitudes who watched the well-trained artillery and cavalry defiling by, hardly dreamed of disaster; yet it came almost at once. The Saxon corps, led by the king's cousin, Prince Louis, pushing on too fast, was surprised and surrounded, and the gallant young commander, the queen's dear friend, the idol of the army, fell while rallying his men.
Louise, who had hurriedly joined the king from Weimar, could hardly be persuaded to leave him, but on the evening of October 13th he confided her to a cavalry escort, promising speedy tidings of the coming battle. As she threaded the lonely passes of the Hartz Mountains she heard the distant cannonading, and a broken sentence now and again fell from her lips: "We know that all things work together for good." Late in the misty October twilight she drove into Brunswick. At Brandenburg a courier brought the news her trembling heart awaited. All was lost! Twenty thousand Prussians lay on the fields of Auerstadt and Jena, and the French were already in Weimar. The king was alive, but two horses had been killed under him. Grief-stricken, travel-worn as she was, Louise must not halt. Before she reached Berlin her children had been sent to Schwedt-on-Oder. She followed thither, almost terrifying them by her changed, despairing looks. As soon as she could check her weeping, she told her boys all she knew about Prince Louis's death. "Do not only grieve for him. Be ready for Prussia's sake to meet death as he met it," and then, in burning, never-forgotten words, she bade them one day free their country and break the power of France.
There seemed only a choice between utter destruction and utter submission, and yet when Napoleon demanded the cession of almost the whole kingdom, Friedrich Wilhelm and his wife agreed that "only determined resistance can save us." She was slowly rallying at Königsberg from a fever caught in the crowded city, when the cry was raised of the coming French. Propped by pillows, swathed in shawls, she drove through blinding sleet to Memel, the one fortress still left to the king. At her first halting-place the wind whistled in through a broken window, and the melting snow dripped from the roof on to her bed. Her companions trembled for her, but she, calm and trustful, hailed as a good omen the sunshine which welcomed them within the walls of Memel.
A week later Benningsen and his Russians, who had been wading knee-deep through Polish forests and fording swollen streams, always with 90,000 Frenchmen in hot pursuit, turned to bay amid the frozen lakes and drifted snows of Eylau. Next day those snows for miles around were red with blood. It was hard to tell with whom the costly victory lay, but Napoleon despatched Bertrand to the Russian outposts to propose an armistice, and Benningsen sent him on to Memel, reminding the Prussian king that it could not be their interest to grant what it was Napoleon's interest to ask. The terms were, indeed, far easier than those offered after June; but Friedrich Wilhelm, true to the ally who had held the field almost single-handed through that terrible winter, would make no separate agreement, nor did Louise receive more favorably a message to herself, conveying Napoleon's wish to pay his court to her in her own capital.
Though the piercing Baltic winds tried her strength greatly, she employed herself whenever able in reading and visiting the over-full hospitals. To a dear friend she said, "I can never be perfectly miserable while faith in God is open to me." "Only by patient perseverance," so she wrote to her father, "can we succeed. Sooner or later I know we shall do so."
It was not to be yet. On June 14, 1807, Napoleon annihilated the Russians at Friedland, and four days later Dantzic fell. Her tone grew sadder. "We are not yet bereft of peace. My great sorrow is being unable to hope."