Battle of Winterthur (1799)

The Battle of Winterthur (27 May 1799) was an important action between elements of the Army of the Danube and elements of the Habsburg army, commanded by Friedrich Freiherr von Hotze, during the War of the Second Coalition, part of the French Revolutionary Wars. The small town of Winterthur lies 18 km northeast of Zürich, in Switzerland. Because of its position at the junction of seven cross-roads, the army that held the town controlled access to most of Switzerland and points crossing the Rhine into southern Germany. Although the forces involved were small, the ability of the Austrians to sustain their 11-hour assault on the French line resulted in the consolidation of three Austrian forces on the plateau north of Zürich, leading to the French defeat a few days later.

By mid-May 1799, the Austrians had wrested control of parts of Switzerland from the French as forces under the command of Hotze and Count Heinrich von Bellegarde pushed them out of the Grisons. After defeating Jean-Baptiste Jourdan's 25,000-man Army of the Danube at the battles of Ostrach and Stockach, the main Austrian army, under command of Archduke Charles, crossed the Rhine at the Swiss town of Schaffhausen and prepared to unite with the armies of Hotze and Friedrich Joseph, Count of Nauendorf, on the plains surrounding Zürich.

The French Army of Switzerland and the Army of the Danube, now both under the command of André Masséna, sought to prevent this merger. Masséna sent Michel Ney and a small mixed cavalry and infantry force from Zürich to stop Hotze's force at Winterthur. Despite a sharp contest, the Austrians succeeded in pushing the French out of the Winterthur highlands, although both sides took high casualties. Once the union of the Habsburg armies took place in early June, Archduke Charles attacked French positions at Zürich and forced the French to withdraw beyond the Limmat river.

Political and diplomatic situation
Initially, the rulers of Europe viewed the revolution in France as an event between the French king and his subjects, and not something in which they should interfere. As revolutionary rhetoric grew more strident, they declared the interest of the monarchs of Europe as one with the interests of Louis and his family; this Declaration of Pilnitz threatened ambiguous, but quite serious, consequences if anything should happen to the royal family. The French position became increasingly difficult. Compounding problems in international relations, French émigrés continued to agitate for support of a counter-revolution. On 20 April 1792, the French National Convention declared war on Austria. In this War of the First Coalition (1792–1798), France ranged itself against most of the European states sharing land or water borders with her, plus Portugal and the Ottoman Empire. Although the Coalition forces achieved several victories at Verdun, Kaiserslautern, Neerwinden, Mainz, Amberg and Würzburg, the efforts of Napoleon Bonaparte in northern Italy pushed Austrian forces back and resulted in the negotiation of the Peace of Leoben (17 April 1797) and the subsequent Treaty of Campo Formio (17 October 1797).

The treaty called for meetings between the involved parties to work out the exact territorial and remunerative details. Convened at a small town in the mid-Rhineland, Rastatt, the Congress quickly derailed in a mire of intrigue and diplomatic posturing. The French demanded more territory. The Austrians were reluctant to cede the designated territories. Compounding the Congress's problems, tensions grew between France and most of the First Coalition allies. Ferdinand of Naples refused to pay agreed-upon tribute to France, and his subjects followed this refusal with a rebellion. The French invaded Naples and established the Parthenopaean Republic. Encouraged by the French Republic, a republican uprising in the Swiss cantons led to the overthrow of the Swiss Confederation and the establishment of the Helvetic Republic. The French Directory was convinced that the Austrians were planning to start another war. Indeed, the weaker France seemed, the more seriously the Austrians, the Neapolitans, the Russians, and the English discussed this possibility. In mid-spring, the Austrians reached an agreement with Tsar Paul of Russia by which the legendary Alexander Suvorov would come out of retirement to assist Austria in Italy with another 60,000 troops.

Outbreak of war in 1799
The French Directory's military strategy in 1799 called for offensive campaigns on all fronts: central Italy, northern Italy, the Swiss cantons, the upper Rhineland, and Holland. Theoretically, the French had a combined force of 250,000 troops, but this was on paper, not in the field. As winter broke in 1799, General Jean Baptiste Jourdan and the Army of the Danube, at a paper strength of 50,000 and an actual strength of 25,000, crossed the Rhine between Basel and Kehl on 1 March. This crossing officially violated the Treaty of Campo Formio. The Army of the Danube advanced through the Black Forest and, by mid-March, established an offensive position at the western and northern edge of the Swiss Plateau by the village of Ostrach. André Masséna had already pushed into Switzerland with his force of 30,000, and successfully passed into the Grison Alps, Chur, and Finstermünz on the Inn river. Theoretically, his left flank was to link with Jourdan's right flank, commanded by Pierre Marie Barthélemy Ferino, at the far eastern shore of Lake Constance. The Austrians had arrayed their own army in a line from the Tyrol to the Danube. A force of 46,000 under command of Count Heinrich von Bellegarde formed the defense of the Tyrol. Another small Austrian force of 26,000 commanded by Friedrich Freiherr von Hotze guarded the Voralberg. The main Austrian Army—close to 80,000 troops under the command of Archduke Charles—had wintered in the Bavarian, Austrian, and Salzburg territories on the eastern side of the Lech river. At the battles of Ostrach (21 March) and Stockach (25 March), the main Austrian force pushed the Army of the Danube back into the Black Forest. Charles made plans to cross the upper Rhine at the Swiss town of Schaffhausen. Friedrich Freiherr von Hotze brought a portion (approximately 8,000) of his force west, leaving the rest to defend the Voralberg. At the same time, Friedrich Joseph, Count of Nauendorf, brought the left wing of the main Austrian force across the Rhine by Eglisau. They planned to unite with the main Austrian army, controlling the northern access points of Zürich and forcing an engagement with Masséna.

By mid-May, French morale was low. They had suffered terrible losses at Ostrach and Stockach, although these had been made up by reinforcements. Two senior officers of the Army of the Danube, Charles Mathieu Isidore Decaen and Jean-Joseph Ange d'Hautpoul, were facing courts-martial on charges of misconduct, proffered by their senior officer, Jourdan. Jean-Baptiste Bernadotte and Laurent de Gouvion Saint-Cyr were sick, or claimed they were, and had left the army's encampments to recover their health. Masséna's force had been repelled by Hotze's army at Feldkirch, and forced to fall back, and LeCourbe's failure to push through against Bellegarde's Austrian force in the Tyrol, meant Masséna had to pull his southern wing back as well as his center and northern wing, to maintain communication with the retreating armies on his flanks. At this point, also, the Swiss revolted again, this time against the French, and Zürich became the last defensible position Masséna could take.

Locale
Winterthur lies in a basin south and east of the Töss river approximately 31 km northeast of Zürich. To the north and east of the town lies a ring of hills approximately 687 m high. To the west, the Töss river runs on its 59.7 km course north toward the Rhine. The locale of a Roman settlement from 200 to 400, and the site of a medieval battle in 919, its location at seven crossroads gave it strategic importance in the effort to control north–south and east–west communication in the early days of the War of the Second Coalition.

Leadership
After the defeats at the battles at Ostrach and Stockach, and the Army of the Danube's retreat into the Black Forest, the French Directory had sacked Jean Baptiste Jourdan in April 1799 and given command of both the Army of Switzerland and the Army of the Danube to André Masséna. Protecting the northern access to Zürich, Masséna gathered some of the best commanders he had available; eventually, three of them would become Marshals of France, and Tharreau, a dependable General of Division. The situation for the French was dire. Not only had they been trounced in southwestern Germany, the legendary Alexander Suvorov was on his way to northern Italy with 60,000 Russians, to take command of Coalition forces there. Count Heinrich Bellegarde, positioned with 20,000 men in the Grisons, effectively isolated Masséna's force from any assistance out of Italy. Most threatening, Archduke Charles' main army lay less than a day away; in size alone, it could overwhelm him, or, if he withdrew to the west, its position cut off his avenue of withdrawal toward France. If Charles' left wing, commanded by Nauendorf, united with Hotze's force, approaching from the east, Masséna knew Charles would attack and very likely push him out of Zürich.

To prevent this merger of the Austrian forces, Masséna established a forward line centered at Winterthur, and under overall command of the experienced Jean Victor Tharreau. The French forces were arrayed in an uneven semicircle, in which Winterthur formed the central part. The command of the Winterthur brigades was the most important. If the center could not hold its position, the flanks would be isolated and crushed. Masséna sent newly promoted General of Division Michel Ney to Winterthur on 27 May 1799 to take command of the center. Masséna recalled him from his assignment commanding an outpost of Claude Lecourbe's force in central Switzerland, and gave him a command more fitting with his new rank. Ney arrived with the reputation for boldness considered typical of cavalry officers, but with minimal experience in commanding mixed forces. Anxious to prove himself but aware of protocols, he had hurried to Tharreau's headquarters, but had to wait for his letters of service before he could take command. These arrived on 25 May. The troops at Winterthur included a brigade of four battalions commanded by Dominique Mansuy Roget, a weak brigade commanded by Théodore Maxime Gazan, and a cavalry brigade commanded by Frédéric Henri Walther. Like Ney, Friedrich Freiherr von Hotze, the Austrian commander, was also a cavalry officer. Unlike Ney, he had broad field experience. The Swiss-born Hotze had entered the military service of the Duke of Württemberg in 1758 and had been promoted to Rittmeister, or captain of cavalry; he had campaigned briefly in the Seven Years' War, but saw no combat. Later, he served in the Russian army in the Russo-Turkish War (1768–74). With an Austrian commission, he joined the Habsburg imperial army, and served in the brief War of the Bavarian Succession (1778–79). His campaigning in the War of the First Coalition, particularly at the Battle of Würzburg, had earned him the confidence of Archduke Charles and elevation to the ranks of nobility by Charles' brother, Francis II, Holy Roman Emperor.

Preliminaries
On 22 May 1799, Friedrich Joseph, Count of Nauendorf, led a large column across the Rhine at Constance, Stein and Eglisau. Hotze's force had already crossed the Rhine further east, where it was still a mountain stream, and passed through the Grisons, into Toggenburg, and moved toward Zürich.

To prevent these two forces from joining with Archduke Charles' 100,000 men, on 22 May, Masséna and 23,000 troops of the Army of the Danube marched from Zürich in the direction of Winterthur. Once past Winterthur, they made their way another 14 km northeast and, on 25 May, the two armies clashed at Frauenfeld. Out-numbered almost four to one, Hotze's force was badly mauled by the French; 750 of Hotze's men were killed or wounded, and 1,450 captured; in addition, Hotze lost two guns, and one color. His second-in-command, Major General Christoph Karl von Piacsek, was wounded in action and died later of his wounds. Despite the superiority of the French numbers, though, Hotze extricated his force from the engagement, maneuvered around the French position, and escaped in the direction of Winterthur.

Meanwhile, by 26 May Nauendorf established camp near Andelfingen and reacquired contact with the main Austrian force. Having united with Nauendorf, Archduke Charles awaited Hotze's force, coming from the east, before he would attack the French at Zürich. That same night, Hotze camped between Frauenfeld and Hüttwilen, about 10 km southeast of Nauendorf's position, and sent his advance posts as far ahead as Islikon and Elgg, only 9 km east of Winterthur.

Clash


On the morning of 27 May, Hotze assembled his force into three columns and marched toward Winterthur. Opposite him, Michel Ney, newly in command of his division of approximately 3,000 men, deployed his force around the heights, the so-called Ober-Winterthur, a ring of low-lying hills some 6 km north of the city.

Given the size of the Austrian force approaching him, Ney planned to withdraw to Winterthur. Before he could implement this action, the over-all commander of the forward line, Jean Victor Tharreau, had galloped to his position and said he would support Ney by sending Jean-de-Dieu Soult's division; Ney understood this to mean he was to make a stand along the entire outpost line, and that he would not be isolated. His small force would receive reinforcements from Soult's division. Consequently, Ney directed the weakest brigade, under the command of Gazan, to move up a long valley toward Frauenfeld, and another brigade, under the command of Roget, to take the right, preventing any Austrian flanking maneuver.

By mid-morning, Hotze's advanced guard had encountered moderate French resistance first from Roget's brigade, and then, almost immediately, from Gazan's. The Austrian advance troops quickly overran Gazan's weak brigade and took possession of the woods surrounding the village of Islikon. After securing the villages of Gundeschwil, Schottikon, Wiesendangen, and Stogen, further west of Islikon, Hotze deployed two of his columns facing the French front, while a third angled to the French right, as Ney had expected he would.

By mid-morning, Ney had moved toward the front with Gazan's brigade and he could see the enemy advancing toward him; still expecting Soult's reinforcements on his flanks, he anticipated an easy victory, like the one three days earlier in which Masséna's force had pounded Hotze's column at Frauenfeld. He did not realize, at least not yet, that Hotze had 8,000 men with which to secure the crossroads north of Winterthur. Ney brought more of his men to the front, and moved against the Austrian left. In an Austrian volley, he and his horse went down; the horse was killed and Ney received a knee injury. He had his wound bandaged, called for another horse, and reentered the fight. Ney now had two problems: he expected support columns from Soult's division on both flanks to arrive momentarily and he did not know that the Austrians had arrived in force, directly in front of his center. Although Roget's brigade was strong enough to prevent the Austrians from flanking the position, Gazan's brigade was too weak to resist the superior Austrian force, which was growing visibly stronger as Hotze's troops continued to arrive at the forward line and throw themselves into the fray. Finally accepting that Soult would not arrive, Ney could not hope to hold his position, much less push the Austrians back. He concluded that he must fall back to Winterthur. To cover the retreat, he instructed Walther and his cavalry to establish a position on the Töss, above the bridge at Stieg. From there, the cavalry could protect an orderly retreat. Amidst a muddy rivulet feeding the Töss, Ney positioned a second detachment guarding the village of Töss and the road leading to a ridge of the hills, where he placed a couple of cannons. From the ridge, his rear guard could fire its artillery on the Austrian advance.

For Walther, at the bridge, the position appeared defensible for as long as it would take to remove Ney's force through Winterthur, yet the shock of the Austrian force, as it hit his defenses, was sufficient to break his line after 90 minutes of brisk fighting. But there the Austrian forward momentum stalled. Although Hotze's men forced Walther's from the bridge, they themselves could not cross it. From the ridge, Ney's rear guard maintained a steady stream of cannon fire on any of the Austrians who crossed the bridge and attempted to advance up the hill. Hotze recognized the futility of throwing his men into direct cannon fire and ordered instead a steady musketry barrage. This proved effective, for Ney was again injured, this time in his left hand, and his second horse was killed; he relinquished command to Gazan, who organized the continued withdrawal from the position.

When the Archduke heard of Hotze's success in taking Winterthur crossroads, he directed his troops to augment Nauendorf's, and to take the village and the environs of Neftenbach, 7 km west-northwest of Winterthur. Nicolas Oudinot, whose men had secured Neftenbach as part of the French forward line, held out for most of the day, but was forced to retreat 4 km to Pfungen in the late afternoon; his position there was not defensible and he was pushed further back to the outskirts of Zürich. By taking Neftenbach, Charles placed a formidable group of troops between Ney's force and Hotze's flank and forced an uneven French withdrawal toward Zürich. Tharreau maneuvered around the Töss, attempting to re-establish his forward line, but Masséna did not want a general engagement between Zürich and Neftenbach, not there and not then. The Armies of Switzerland and the Danube were not ready to take on Charles; Masséna's forces were not prepared for a battle on the scale required in facing Charles' entire army, and he needed the defenses offered by Zürich to mount a proper line against the impending Austrian attack. Eventually, Tharreau withdrew the entire forward line to Zürich. The clash took 11 hours.

Aftermath
Hotze's force took relatively high casualties—1,000 men killed, wounded or missing (12.5 percent) of his entire force of 8,000—although his losses were comparable to Ney's 800 killed wounded or missing, from his 7,000-man force (11.5 percent). More importantly, though, Hotze succeeded not only in pushing the French back from Winterthur, but also in uniting his force with Nauendorf's and Charles'. The unified Austrian force completed the semicircle around Masséna's positions at Zürich.

For the French, despite their success earlier at Frauenfeld, the action was considerably less successful. In the clash, Ney was sufficiently wounded that he took immediate leave, and remained out of action and command until 22 July. The conduct of the battle also demonstrated the weakness of the French command system in which personal animosity and competition between high-ranking officers, in this case, Soult and Tharreau, undermined French military objectives. Tharreau eventually charged Soult with insubordination; Soult had outright refused to go to Ney's assistance, despite specific, and direct, orders to move his division to Ney's flanks.

Furthermore, the French dangerously underestimated Austrian tenacity and military skill. The white coats, as the French called the Austrians, were far better soldiers than the French assumed, and despite such demonstrations as that at Ostrach, Stockach and Winterthur, the French continued to hold this prejudice. This did not change until 1809 when the Battle of Aspern-Essling and the Battle of Wagram a few weeks later caused Napoleon to revise his opinion of the Austrian military.

Finally, the battle at Winterthur made possible the victory at Zürich. Once the Austrian armies united west, north and east of Zürich, Charles decided he had a sufficiently superior force to attack Masséna's positions in Zürich. His strategy, to develop a converging attack, was not entirely possible without another Austria corps, which was commanded by Suvorov, and positioned in the mountains in Italy; this would have made possible the near encirclement of Masséna's command at Zürich, making the French position untenable. Even so, at the First Battle of Zürich (4–7 June 1799), the Austrian army forced the French to abandon Zürich; Masséna withdrew across the Limmat river, where he set up a defensive position on the low-lying hills overlooking the city and awaited his opportunity to reacquire the city.

Austrian
Total: ~8000 men
 * Lt. Field Marshal Friedrich Freiherr von Hotze
 * 12. Infantry Regiment Manfredini (3 battalions)
 * 21. Infantry Regiment Gemmingen (2 companies)
 * 41. Infantry Regiment Bender (3 battalions)
 * 1. Light Infantry Regiment Strozzi (1 battalion)
 * 7. Dragoon Regiment Waldeck (6 squadrons)
 * First Battalion, Hungarian-Banat Border Regiment

French

 * General of Division Michel Ney
 * Honoré Théodore Maxime Gazan de la Peyrière's column (4 battalions)
 * Dominique Mansuy Roget's column (2 battalions)
 * Frédéric Henri Walther's cavalry (3 squadrons)

Total: 7,000 men