~ Austria est imperio optime unita ~
The Swabian War of 1499
Der Kaiser, Maximilian I
While Louis XII was commencing his designs on the duchy of Milan, another conflict was brewing to the north. The Hapsburgs were a Swiss family, by origin, and their gradual accession to Archdukes of Austria and eventual Holy Roman Emperors was concurrent with the equally gradual loss of their ancestral Swiss holdings. Since the 13th century, the cantons of the Swiss Confederacy had made a habit of absorbing Hapsburg domains piecemeal, leaving them with territories that existed only on the periphery of the Swiss plateau. This made for an inconvenient situation for the Hapsburgs, who, as Emperors, needed access to as many Alpine passes as was possible for the sake of maintaining a coherent link with Imperial Italy. This constant shuffle over control of the Alps would boil over into open warfare in January of 1499.
(Cream: Hapsburgs, Green: Swiss Confederacy, Red: Three Leagues of Grisons, Yellow: other Swiss cantons)
What began as a local struggle for control over the eastern Umbrail Pass between Austrian forces and the “Three Leagues” of Grisons grew into what would later be named the Swabian War, after both the name of its relative geographic placement and also the involvement of the Swabian League (an alliance system containing the Hapsburgs, Ansbach, Baden, Bavaria, Bayreuth, Hesse, Mainz, the Electorate of the Palatinate, Trier, Tyrol, and Württemberg). The war started out very poorly for the Hapsburgs, with defeats on the Swiss frontier at Hard, Bruderholz, and Schwaderloh. However, the unfolding of the Second Italian War to the south began affecting profound changes in the Hapsburgs’ fortunes.
Before invading Northern Italy, Louis XII reached an agreement with the Swiss Confederacy for as many mercenaries as he requested in exchange for an annual subsidy of 20,000 francs. Louis XII would overestimate the resistance he would encounter and ended up hiring 8,000 before his invasion was even underway. The number of Swiss troops participating in the Second Italian war (on both sides) would eventually reach as many as 16,000, with Swiss transient workers, merchants, and unaligned sellswords raising that number to 25,000 - a number which, out of an adult male population of around 200,000, the Swiss could not so easily replace, especially in terms of its population of experienced and outfitted troops. With so much real and potential soldiery absent from Switzerland for the foreseeable future, a single devastating defeat was all that it would take for the Hapsburgs to bowl over the Swiss defenses.
The real turn of the tide came on the 20th of April, 1499, near the Tyrolean town of Frastanz. Aware of Frastanz’s strong fortifications, the Swiss commander Heinrich Wolleb sent a 2,000 man detachment from his 9,000 strong army over the Roya mountain to attack the Hapsburg camp from the side, while the remaining contingent, led by Ulrich von Sax, stayed back to prevent the Hapsburgs, led by Burkhard von Knörringen, from advancing.. However, the surprise contingent was tardy in its arrival, and with the Hapsburgs appearing to strike camp, von Sax attempted to drive them into the river Ill. Von Sax was mistaken, however, and the Hapsburg line that was pulling back was really giving way to another, more defensively positioned line of landsknechts, who repulsed the Swiss charge while a company of Tyrolean knights supported with a flanking maneuver, dispersing von Sax’s men. Wolleb arrived while von Sax’s columns were in full rout, and therefore lacked the panned double front. Wolleb’s troops would be forced to retreat as, doing minimal damage, after Wolleb himself was slain by a Hapsburg arquebusier. In total, the Hapsburgs lost close to 800 men, while Swiss casualties were greater than 2,000. Von Knörringen was wary to advance from the safety of Frastanz, but after a week without any nearby Swiss activity, he advanced westwards, securing Thurgau and ensuring the neutrality of Appenzell and St. Gallen.
(1: Wolleb's advance, 2a: von Sax's advance, 2b: von Sax's retreat, 3: Hapsburg encampment)
The surprise Hapsburg victory at Frastanz would be soon be followed by another at the battle of the Thur (also known as the Battle of Weinfelden). On May 1st, with an army supplemented by Hapsburg reinforcements ferried across the Bodensee, von Knörringen and the newly arrived Heinrich von Fürstenberg faced a Swiss army of 3,000, which their army of 6,500 made short work of, killing or capturing 1,500 Swiss troops in a mere forty minute battle - all at the cost of 900 of their own. The battle of Calven (against the forces of the Three Leagues), which occurred 25 days later, would, in contrast, end in victory for the Swiss, but a pyrrhic one - with 2,300 dead against the Hapsburg’s 3,700 dead. The Swiss would also be unable to replicate such a favorable outcome, and the Three Leagues gradually became overrun, with Hapsburg forces occupying the city of Chur on June 29th.
The inevitability of a Hapsburg siege of the major canton cities and the failure of Swiss armies to maintain their initial string of victories caused a great deal of instability and suspicion in the Swiss Confederacy. As the Confederacy (Eidgenossenschaft) was truly only a loose alliance of cities and their rural dependencies, the Confederate bond was one that could be much more easily dissolved than that of, say, one within a traditional feudal monarchy at the time. Consequently, following the battle of the Thur, the Great Council of Zürich began to deliberate on whether or not surrender to the Hapsburgs might be the more prudent course of action. This would be a debate that would last two months, with a significant amount of opposition and democratic chaos. Whatever the case, the Great Council’s mind was made up upon receiving news of the battles of Biederthal (July 10th) - wherein 15,000 Hapsburg troops lured the Swiss onto more even terrain and broke their line, routing their 6,000 man army - and of Kleinhüningen (July 13th) - wherein the Swiss army broken at Biederthal was wiped out to the immediate north of the prominent canton city of Basel. The Great Council of Zürich ordered an envoy to the camp of Heinrich von Fürstenberg, who was now in the process of occupying the Toggenburg region, and presented him with their official terms of surrender on July 21st.
Die Front (c. July 21st 1499)
While Zürich had requested specifically that it be allowed to persist as a full member of the Swiss Confederacy and that no Hapsburg troops be billeted within its walls, Heinrich von Fürstenberg nonetheless ordered the occupation of the city as a springboard into the heart of the Confederacy, thereby hoping to possibly evoke a similar response from Lucerne or Schwyz. The sudden capitulation and occupation of Zürich sent the other members of the Confederacy into a panic. Able bodied Swiss men were leaving for Northern Italy in droves, and the Hapsburgs seemed unfazed by the casualties they had sustained while each fallen Swiss soldier was a blow to the very foundations of each canton - Bern, the Confederacy’s center of gravity, had alone lost 4,000 troops in the battles of Biederthal and Kleinhüningen. The time had come for peace. As the Swiss Confederacy held a prominent position in the Empire and thus never feared that it would be fully dissolved, the worst that could come of surrender would be war reparations. The cantons of Bern, Schwyz, Lucerne, and Fribourg sent an embassy to Maximilian, which arrived on September 2nd.
In the consequent Treaty of Konstanz (ratified by all interested parties on October 15th, 1499), Maximilian was thorough in his terms, bordering on vengeful: Zürich and its pale would become an Imperial city separate from the Swiss Confederacy, the remaining Swiss Confederacy (now primarily just Bern, Fribourg, Schwyz and Lucerne) would join the Swabian League, and the Cantons of St. Gallen, Appenzell, Schaffhausen and Basel were both formally severed of any ties to the Swiss Confederacy and also placed under Hapsburg hegemony as nominally autonomous dependencies with Imperial immediacy (that is, no hierarchy between them and the Emperor). A great deal of northern Swiss hinterland including Thurgau was also directly requisitioned, establishing a land corridor connecting Hapsburgs’ possessions in Tyrol, Further Austria, and the Free County of Burgundy.
Der Vertrag von Konstanz (October 15th, 1499)
(Cream: Hapsburg possessions and de facto controlled Swiss cantons, Gold: the Imperial City of Zürich, Purple: the remains of the Swiss Confederacy, Pink: the remains of the Three Leagues, Blue: the canton of Basel, Other Colors: associate cantons)
With the Swiss nuisance battered into submission, Maximilian shifted his attention to Imperial reform. In the late 15th century, Christendom had begun to feel in full the exhaustive consequences of its traditional blood feuds. In the eyes of many Europeans, violent quarrels between their princes had brought nothing but butcher and discord, while the demesne of Christ was being chiseled away by heathen and heretic alike. In 1453, the Ottoman Turk had done the unthinkable and wiped out the last vestige of the Roman Empire, and now strode about the Balkans virtually unopposed. Yet the great Christian kings continued to drown their land in Christian blood for the smallest concessions of marches, castles, and titles. Fortunately, not all the potentates of Europe were ignorant of their kingdoms’ fractured state, nor of the dangers posed by encroaching infidels. While centuries of division in the Iberian peninsula and the consequent bloodshed had created a general desire for peace and unity that culminated in the birth of Miguel da Paz, similar developments were taking place in the Holy Roman Empire. At the Diet of Worms in 1495, Maximilian had signed into Imperial law the “Ewiger Landfriede” (“Perpetual Peace”) as an attempt to curb the amount of private feuds in the Empire. While the widespread non observance of this decree was made painfully obvious by the Swabian War, Maximilian would attempt to enforce it with a vengeance in the coming decades.