Crossing the Rhine According to plan, Kléber made the first move, advancing south from Düsseldorf against Württemberg's wing of the Army of the Lower Rhine. On 1 June 1796, a division of Kléber's troops led by
François Joseph Lefebvre seized a bridge over the Sieg from
Michael von Kienmayer's Austrians at
Siegburg. Meanwhile, a second French division under
Claude-Sylvestre Colaud menaced the Austrian left flank. Württemberg retreated south to Uckerath but then fell further back to a well-fortified position at
Altenkirchen. On 4 June, Kléber defeated Württemberg in the
Battle of Altenkirchen, capturing 1,500 Austrian soldiers, 12 artillery pieces and four colors. Charles withdrew the Austrian forces from the Rhine's west bank and gave the Army of the Upper Rhine the principal responsibility to defend Mainz. After this setback, Charles replaced Württemberg with Wartensleben, much to Württemberg's annoyance: the Duke returned to
Vienna and offered the Aulic Council his persistent criticism of Charles' decisions and advice on how they could run the war better from the capital. Jourdan's main body crossed the Rhine on 10 June at
Neuwied to join Kléber and the Army of Sambre and Meuse advanced to the river
Lahn. Leaving 12,000 troops to guard Mannheim, Charles repositioned his troops among his two armies and swiftly moved north against Jourdan. The Archduke defeated the Army of Sambre and Meuse at the
Battle of Wetzlar on 15 June 1796 and Jourdan lost no time in recrossing to the safety of the west shore of the Rhine at Neuwied. Following up, the Austrians clashed with Kléber's divisions at
Uckerath, inflicting 3,000 casualties on the French for a loss of only 600. After his success, Charles left 35,000 men with Wartensleben, 30,000 more in Mainz and the other fortresses and moved south with 20,000 troops to help Latour. Kléber withdrew into the Düsseldorf defenses. The action was not an unmitigated success for the Coalition. While Charles was inflicting damage at Wetzlar and Uckerath, on 15 June, Desaix's 30,000-man command mauled
Franz Petrasch's 11,000 Austrians at
Maudach. The French lost 600 casualties while the Austrians suffered three times as many. After feinting at the Austrian positions near Mannheim, Moreau sent his army south from
Speyer on a forced march to
Strasburg; Desaix, leading the advanced guard, crossed the Rhine at Kehl near Strasburg on the night of 23/24 June. The Coalition's position at Kehl was modestly defended. On 24 June
Louis Desaix's advance group attacked the out-classed Swabian farmhands there on the bridge, preceding the main force of 27,000 infantry and 3,000 cavalry. In the
First Battle of Kehl the 10,065 French troops involved in the initial assault lost only 150 casualties. The Swabians were outnumbered and could not be reinforced. Most of the Imperial Army of the Rhine had remained near Mannheim, where Charles anticipated the principal attack. Neither the Condé's
troops in
Freiburg im Breisgau nor
Karl Aloys zu Fürstenberg's force in Rastatt could reach Kehl in time to support them. The Swabians suffered 700 casualties and lost 14 guns and 22 ammunition wagons. Moreau reinforced his newly won bridgehead on 26–27 June so that he had 30,000 troops to oppose only 18,000 locally based Coalition troops. Leaving Delaborde's division on the west bank to watch the Rhine between Neuf-Brisach and Hüningen, Moreau moved to the north against Latour. Separated from their commander, the Austrian left flank under Fröhlich and the Condé withdrew to the southeast. At Renchen on 28 June, Desaix caught up with Sztáray's column of 9,000 Austrian and
Reichsarmee (Imperial) troops. For only 200 of their own casualties, the French inflicted losses of 550 killed and wounded, while capturing 850 men, seven guns and two ammunition wagons. Furthermore, at Hüningen, near Basel, on the same day that Moreau's advance guard crossed at Kehl,
Pierre Marie Barthélemy Ferino executed a full crossing, and advanced unopposed east along the German shore of the Rhine, with the 16th and 50th Demi-brigades, the 68th, 50th and 68th line infantry, and six squadrons of cavalry that included the 3rd and 7th Hussars and the 10th Dragoons. This gave the French the desired pincer effect, the Army of the Sambre and Meuse approaching from the north, the bulk of the Army of the Rhine and Moselle crossing in the center, and Ferino crossing in the south. Within a day, Moreau had four divisions across the river, representing a fundamental success of the French plan, and they executed their plan with alacrity. From the south, Ferino pursued Fröhlich and the Condé in a wide sweep east-north-east toward
Villingen while Gouvion Saint-Cyr chased the
Kreistruppen into Rastatt. Latour and Sztáray tried to hold the line of the river
Murg. The French employed 19,000 foot soldiers and 1,500 horsemen in the divisions of
Alexandre Camille Taponier and
François Antoine Louis Bourcier. The Austrian brought 6,000 men into action under the command of Karl Aloys zu Fürstenberg and
Johann Mészáros von Szoboszló. The French captured 200 Austrians and three field pieces. On 5 July 1796, Desaix defeated Latour at the
Battle of Rastatt by turning both his flanks, and drove his Imperial and Habsburg combined force back to the river
Alb. The Habsburg and Imperial armies did not have enough troops to hold off the Army of the Rhine and Moselle and would need reinforcements from Charles, who was occupied in the north keeping Jourdan pinned down on the west bank of the Rhine.
French offensive Recognizing the need for reinforcements, and fearing his army would be flanked by Moreau's surprise crossings at Kehl and Hüningen, Charles arrived near Rastatt with more troops and prepared to advance against Moreau on 10 July. The French surprised him by attacking first, on 9 July. Despite the surprise, in the
Battle of Ettlingen, Charles repulsed Desaix's attacks on his right flank, but Saint-Cyr and Taponier gained ground in the hills to the east of the town, and threatened his flank. Moreau lost 2,400 out of 36,000 men while Charles had 2,600
hors de combat out of 32,000 troops. Anxious about the security of his supply lines, though, Charles began a measured and careful retreat to the east. French successes continued. With Charles absent from the north, Jourdan recrossed the Rhine and drove Wartensleben behind the Lahn. Pushing forward again, the Army of Sambre and Meuse defeated its opponents at
Friedberg (Hessen) on 10 July, while Charles was busy at Ettlingen. In this action, the Austrians suffered 1,000 casualties against a French loss of 700. Jourdan captured
Frankfurt am Main on 16 July. Leaving behind
François Séverin Marceau-Desgraviers with 28,000 troops to blockade Mainz and Ehrenbreitstein, Jourdan pressed up the river Main. Following Carnot's strategy, the French commander continually operated against Wartensleben's north flank, causing the Austrian general to fall back. Jourdan's army numbered 46,197 men while Wartensleben counted 36,284 troops; Wartensleben felt no security in attacking the larger French force, and continued to withdraw to the northeast, further away from Charles' flank. Buoyed up by their forward movement and by the capture of Austrian supplies, the French captured
Würzburg on 4 August. Three days later, the Army of Sambre and Meuse, under the temporary direction of Kléber, won another clash with Wartensleben at
Forchheim on 7 August. Meanwhile, in the south the Army of Rhine and Moselle continually clashed with Charles' retreating army at Cannstadt near
Stuttgart on 21 July 1796. The Swabians and
Electorate of Bavaria began to negotiate with Moreau for relief; by mid-July, Moreau's army had control of most of southwestern Germany, and had most of the southwestern states in a punitive armistice. The Imperial troops (
Kreistruppen) took little part in the remainder of the campaign and they were disarmed forcibly by Fröhlich, their commander, on 29 July at
Biberach an der Riss before they disbanded and returned to their homes. Charles retreated with the Habsburg troops through
Geislingen an der Steige around 2 August and was in
Nördlingen by 10 August. At this date, Moreau had 45,000 men spread out on a front centered on
Neresheim, but with both flanks unsecured. Meanwhile, Ferino's right wing was out of touch far to the south at
Memmingen. Charles planned to cross to the south bank of the
Danube, but Moreau was close enough to interfere with the operation. The Archduke decided to launch an attack instead.
Stasis At this point in the campaign, either side could have crushed the other by joining their two armies. Wartensleben's recalcitrance frustrated Charles; Wartensleben was an old soldier, a veteran of the
Seven Years' War and himself a scion of nobility who saw no need to bend to the wishes of a 25-year-old general, even if that general was an archduke, a brother to the Holy Roman emperor, and his commander-in-chief. Wartensleben simply ignored instructions or requests from Charles to unite their flanks so that together they could turn and face the French with a united front, and he continued to withdraw further to the northeast, away from the commander-in-chief. Moreau and Jourdan faced similar difficulties. Jourdan continued in his single-minded pursuit of Wartensleben; Moreau continued his single-minded pursuit of Charles, penetrating deep into Bavaria. The French armies drew further and further away from the Rhine, and from each other, stretching their supply lines and decreasing the possibility of covering each other's flanks. Napoleon later wrote of Moreau's actions, "One would have said that he was ignorant that a French army existed on his left". The historian
Theodore Ayrault Dodge asserted that the combined army "could have crushed the Austrians".
Habsburg counteroffensive The
Battle of Neresheim on 11 August marked the turning point; it was a series of clashes fought on a broad front during which the Austrians drove back Moreau's right (southern) flank and nearly captured his artillery park. When Moreau got ready to fight the following day, he discovered that the Austrians had slipped away and were crossing the Danube. Both armies lost about 3,000 men. Similarly, Jourdan experienced a setback in the north, during a clash at
Sulzbach on 17 August, when
Paul Kray's Austrians inflicted losses of 1,000 killed and wounded and 700 captured on the French while suffering losses of 900 killed and wounded and 200 captured. Despite their losses, the French continued their advance. Wartensleben's army retreated behind the river
Naab on 18 August and, as Jourdan closed up to the Naab, he posted
Jean-Baptiste Bernadotte's division at
Neumarkt in der Oberpfalz to observe Charles, hoping that would keep the Austrians from hitting him by surprise. Unbeknownst to them, Charles was receiving reinforcements south of the Danube that brought his strength up to 60,000 troops. He left 35,000 soldiers under the command of Latour to contain the Army of the Rhine and Moselle along the Danube.
United Habsburg front By now Charles clearly understood that if he could unite with Wartenbsleben, he could pick off both the French armies in succession. Having sufficient reinforcements, and having transferred his supply line from Vienna to
Bohemia, he planned to move north to unite with Wartensleben: if the stubborn old man would not come to him, the young archduke would go to the stubborn old man. With 25,000 of his best troops, Charles crossed to the north bank of the Danube at
Regensburg. On 22 August 1796, Charles and
Friedrich Joseph, Count of Nauendorf, encountered Bernadotte's division at Neumarkt. The outnumbered French were driven northwest through
Altdorf bei Nürnberg to the river
Pegnitz. Leaving
Friedrich Freiherr von Hotze with a division to pursue Bernadotte, Charles thrust north at Jourdan's right flank. The French general fell back to
Amberg as Charles and Wartensleben's forces converged on the Army of Sambre and Meuse. On 20 August, Moreau sent Jourdan a message vowing to closely follow Charles, which he did not do. In the
Battle of Amberg on 24 August, Charles defeated the French and destroyed two battalions of their rearguard. The Austrians lost 400 killed and wounded out of 40,000 troops. Of a total of 34,000 soldiers, the French suffered losses of 1,200 killed and wounded plus 800 men and two colors captured. Jourdan retreated first to Sulzbach and then behind the river
Wiesent where Bernadotte joined him on 28 August. Meanwhile, Hotze reoccupied
Nürnberg. Jourdan, who had expected Moreau to keep Charles occupied in the south, now found himself facing a numerically superior enemy. As Jourdan fell back to
Schweinfurt, he saw a chance to retrieve his campaign by offering battle at Würzburg, an important stronghold on the river Main. At this point, the petty jealousies and rivalries that had festered in the French Army over the summer came to a head. Jourdan had a spat with his wing commander Kléber and that officer suddenly resigned his command. Two generals from Kléber's clique, Bernadotte and Colaud, both made excuses to leave the army immediately. Faced with this mutiny, Jourdan replaced Bernadotte with General
Henri Simon and split up Colaud's units among the other divisions. With his reorganized troops, Jourdan marched south with 30,000 men of the infantry divisions of Simon,
Jean Étienne Championnet, and
Paul Grenier, and with the reserve cavalry of
Jacques Philippe Bonnaud. Lefebvre's division, 10,000-strong, remained at Schweinfurt to cover a possible retreat, if needed. Anticipating Jourdan's move, Charles rushed his army toward battle at Würzburg on 1 September. Marshaling the divisions of Hotze, Sztáray, Kray,
Johann Sigismund Riesch,
Johann I Joseph, Prince of Liechtenstein and Wartensleben, the Austrians won the
Battle of Würzburg on 3 September, forcing the French to retreat to the river Lahn. Charles lost 1,500 casualties out of 44,000 troops there, while inflicting 2,000 casualties on the outnumbered French. Another authority gave French losses as 2,000 killed and wounded plus 1,000 men and seven guns captured, while Austrian losses numbered 1,200 killed and wounded and 300 captured. Regardless, the losses at Würzburg compelled the French to lift the siege of Mainz on 7 September, and to move those troops to reinforce their lines further east. On 10 September, Marceau-Desgraviers reinforced the much-pressed Army of Sambre and Meuse with 12,000 troops that had been blockading the east side of Mainz.
Jean Hardy's division on the west side of Mainz retreated to the Nahe, and dug in there. At this point, the French government belatedly transferred two divisions commanded by
Jacques MacDonald and
Jean Castelbert de Castelverd from France's idle
Army of the North. MacDonald's division stopped at Düsseldorf while Castelverd's was placed in the French line on the lower Lahn. These reinforcements brought Jourdan's strength up to 50,000, which would have given him an edge on Charles, except that his abandonment of the sieges at Mainz, and later Mannheim and
Philippsburg, released 16,200 and 11,630 Habsburg troops (respectively) to reinforce Charles' already overwhelming numbers. Moreau seemed oblivious to Jourdan's situation. Still far to the east of Jourdan, Moreau crossed to the south bank of the Danube on 19 August, leaving only
Antoine Guillaume Delmas's division on the north bank. By no later than the 20th, Moreau was aware that Charles had recrossed the Danube, heading north, but instead of pursuing him, the French general pressed eastward toward the river
Lech. Ferino's right wing, which had been wandering with seeming aimlessness around upper Swabia and Bavaria, finally rejoined the Army of Rhine and Moselle on 22 August, although Delaborde's division remained well to the south. Ferino's only notable action was repulsing a night attack by the 5,000–6,000-man Army of Condé at
Kammlach on 13–14 August. The French Royalists and their mercenaries sustained 720 casualties, while Ferino lost a number of prisoners. In this action, Captain
Maximilien Sébastien Foy led a Republican horse artillery battery with distinction. Facing the southernmost wing of the Army of the Rhine and Moselle, the combative Latour rashly stood to fight on the Lech near
Augsburg on 24 August. Despite rising waters in which some soldiers drowned, Saint-Cyr and Ferino attacked across the river. In the
Battle of Friedberg (Bavaria) the French crushed an Austrian infantry regiment, inflicting losses of 600 killed and wounded plus 1,200 men and 17 field guns captured. French casualties numbered 400. Over the next few days, Jourdan's army withdrew again to the west bank of the Rhine. After his disastrous panic at Diez, Castelverd held east bank entrenchments at Neuwied and Poncet crossed at
Bonn while the other divisions retired behind the Sieg. Jourdan handed over command to
Pierre de Ruel, marquis de Beurnonville, on 22 September. Charles left 32,000 to 36,000 troops in the north and 9,000 more in Mainz and Mannheim, moving south with 16,000 to help intercept Moreau.
Franz von Werneck was placed in charge of the northern force. Though Beurnonville's army grew to 80,000 men, he remained completely passive in the fall and winter of 1796. The disgraced Castelverd was later replaced by
Jacques Desjardin.
Moreau's retreat While Charles and his army ruined the French strategy in the north, Moreau moved too slowly in Bavaria. Although Saint-Cyr captured a crossing of the river
Isar at
Freising on 3 September, Latour and his Habsburg troops regrouped at
Landshut. Latour, having visions of destroying Moreau's army in the south, pressed hard against the French rearguard. Saint-Cyr's center was directed to assault Latour's center while Ferino was instructed to turn the Austrian left under Condé and
Karl Mercandin. Ferino was too distant to intervene, but his colleagues drove back the Austrians and seized Biberach an der Riss, together with 4,000 Austrian prisoners, 18 guns and two colors. The French lost 500 killed and wounded while the Austrians lost 300, but this was the last significant French victory of the campaign. Moreau sent Desaix to the Danube's north bank on 10 September, but Charles ignored this threat as the distraction it was. It soon became obvious that, like Jourdan's force in the north, the Army of Rhine and Moselle was isolated and too far extended, and had to retreat. In the first half of September, in Bavaria, Latour's 16,960 men hounded Moreau's army in a drive to the east while Fröhlich's 10,906 soldiers pushed from the south. Nauendorf's 5,815 men went north, and Petrasch's 5,564 troops continued their push to the west. On 18 September, Petrasch and 5,000 Austrians briefly captured the fortified bridgehead at Kehl before being driven out by
Balthazar Alexis Henri Schauenburg's counterattack. Each side suffered 2,000 killed, wounded and captured. Instead of burning the bridge, though, as they should have done, Petrasch's men plundered the French camp and lost the opportunity to trap Schauenburg's army on the west bank of the Rhine. Moreau began retreating on 19 September. By the 21st the Army of Rhine and Moselle reached the river
Iller. On 1 October, the Austrians attacked, only to be repulsed by a brigade under
Claude Lecourbe. On 2 October, Latour's army was deployed in a weak position with the river
Riss behind it. Moreau ordered Desaix's left wing to attack Latour's right, commanded by
Siegfried von Kospoth. At the same time, Moreau attacked with 39,000 troops, defeated Latour's 24,000 men in the
Battle of Biberach. Moreau wanted to retreat through the Black Forest via the
Kinzig river valley, but Nauendorf blocked that route. Instead, Saint-Cyr's column led the way over the Höllenthal, breaking through the Austrian net at
Neustadt and reaching Freiburg im Breisgau on 12 October. Moreau's supply trains took a route down the river
Wiese to Hüningen. The French general wanted to reach Kehl farther down the Rhine, but by this time Charles was barring the way with 35,000 soldiers. For his trains to get away, Moreau needed to hold his position for a few days. The
Battle of Emmendingen was fought on 19 October, the 32,000 French losing 1,000 killed and wounded plus 1,800 men and two guns captured. The Austrians sustained 1,000 casualties out of 28,000 troops engaged. There was some fighting on the 20th, but when Charles advanced on 21 October the French were gone. Moreau sent Desaix's wing to the west bank of the Rhine at
Breisach and, with the main part of his army, offered battle at
Schliengen. Saint-Cyr held the low ground on the left near the Rhine while Ferino defended the hills on the right. Charles hoped to turn the French right and trap Moreau's army against the Rhine. In the
Battle of Schliengen on 24 October, the French suffered 1,200 casualties out of 32,000 engaged. The Austrians counted 800 casualties out of 36,000 men. The French held off the Austrian attacks but retreated the next day and recrossed to the west bank of the Rhine on 26 October. In the south, the French held two east-bank bridgeheads. Moreau ordered Desaix to defend Kehl while Ferino and Abbatucci were to hold Hüningen.
Armistice refused and subsequent sieges Moreau offered Charles an armistice and the Archduke was eager to accept it so that he could send 10,000 reinforcements to Italy, but the Aulic Council directed him to refuse it and to reduce Kehl and Hüningen. While Charles was instructed to reduce the cities, in early January, the French began transferring two divisions to Bonaparte's army in Italy. Bernadotte's 12,000 from the Army of Sambre and Meuse and Delmas's 9,500 from the Army of Rhine and Moselle went south to support Bonaparte's approach to Vienna. Instead of sending a comparable number of men to Italy to defend against the reinforcements, Charles gave Latour 29,000 infantry and 5,900 cavalry and ordered him to capture Kehl. The
Siege of Kehl lasted from 10 November to 9 January 1797, during which the French suffered 4,000 and the Austrians 4,800 casualties. By a negotiated agreement, the French surrendered Kehl in return for an undisturbed withdrawal of the garrison into Strasbourg. Similarly, the French handed over the east-bank bridgehead at
Hüningen on 5 February. ==Aftermath==