The period between the French Revolution and the Battle of Königgrätz in 1866 was a period of war. Many of the basic political attitudes, animosities towards other groups and European nationalism of the 19th and 20th centuries, which were also to influence the history of Innsbruck, had their roots in the conflicts of this period. The monarchies of Europe, led by the Habsburgs, had declared war on the French Republic. Fears were rife that the slogan of the revolution "Liberté, Égalité, Fraternité" could spread across Europe. A young general named Napoleon Bonaparte was with his italienischen Armee advanced across the Alps as part of the coalition wars and met the Austrian troops there. It was not just a war for territory and power, it was a battle of systems. The Grande Armee of the revolutionary French Republic met the troops of the arch-Catholic Habsburgs.

Tyrolean riflemen were involved in the fighting to defend the country's borders against the advancing French. The strength of units like the Höttinger Schützen, formed in 1796, lay not in open field battles but in guerrilla warfare. They also had a secret weapon on their side against the most advanced and modern army of the time: the Sacred Heart. Since 1719, Jesuit missionaries had been travelling to the furthest side valleys and had successfully established the cult of the Sacred Heart as a unifying element in the fight against pagan customs and Protestantism. Now that they were facing the godless revolutionary French, who had declared war not only on the monarchy but also on the clergy, it was only logical that the Sacred Heart of Jesus would watch over the Tyrolean holy warriors in a protective capacity. In a hopeless situation, the Tyrolean troops renewed their covenant with the Heart of Jesus to ask for protection. Against all odds, the Tyrolean archers were successful in their defence. It was the abbot of Stams Abbey who petitioned the provincial estates to henceforth organise an annual "das Fest des göttlichen Herzens Jesu mit feierlichem Gottesdienst zu begehen, wenn Tirol von der drohenden Feindesgefahr befreit werde." Every year, the Sacred Heart celebrations were discussed and announced with great pomp in the press. In the 19th and early 20th centuries in particular, they were an explosive mixture of popular superstition, Catholicism and national resentment against everything French and Italian. Countless soldiers entrusted their well-being to the heart of Jesus even in the technologised battlefield of the First World War and carried images of this symbol with them in the hail of grenades. Alongside Cranach's Mother of Mercy, the depiction of the Heart of Jesus is probably the most popular Christian motif in Tyrol to this day and is emblazoned on the façades of countless houses.

The Habsburg Tyrol had expanded during the turmoil of war without his involvement, and probably also without that of the Sacred Heart of Jesus. Trentino had become part of the crown land in the last breaths of the Holy Roman Empire before its dissolution in 1803. After the Napoleonic Wars, the Tyrolean borders remained quiet for around 30 years. This changed with the Italian Risorgimento, the national movement led by Sardinia-Piedmont and France. 1848, 1859 and 1866 saw the so-called Italian wars of unification. In the course of the 19th century, at the latest since 1848, there was a veritable national frenzy among young men of the upper classes. Volunteer armies sprang up in all regions of Europe. Students and academics who came together in their fraternities, gymnasts, marksmen, all wanted to prove their new love of the nation on the battlefield and supported the official armies.

As a garrison town, Innsbruck was an important supply centre. After the Congress of Vienna, the Tyrolean Jägerkorps the k.k. Tiroler Kaiserjägerregiment an elite unit that was deployed in these conflicts. Volunteer units such as the Innsbruck academics or the Stubai Riflemen fought in Italy. Thousands fell in the fight against the coalition of the arch-enemy France, the godless Garibaldians and the threat posed by the Kingdom of Italy under the leadership of the Francophile Savoys from Piedmont, which was being formed at Austria's expense. The media fuelled the mood away from the front line. The "Innsbrucker Zeitung" predigte in ihren Artikeln Kaisertreue und großdeutsch-tirolischen Nationalismus, wetterte gegen das Italienertum und Franzosen und pries den Mut Tiroler Soldaten.

"Die starke Besetzung der Höhen am Ausgange des Valsugana bei Primolano und le Tezze gab schon oft den Innsbrucker-Akademikern I. und den Stubaiern Anlaß, freiwillige Ercur:sionen gegen le Tezze, Fonzago und Fastro, als auch auf das rechte Brenta-Ufer und den Höhen gegen die kleinen Lager von den Sette comuni zu machen...Am 19. schon haben die Stubaier einige Feinde niedergestreckt, als sie sich das erste mal hinunterwagten, indem sie sich ihnen entgegenschlichen..."

Probably the most famous battle of the Wars of unification took place in Solferino near Lake Garda in 1859. Horrified by the bloody events, Henry Durant decided to found the Red Cross. The writer Joseph Roth described the events in the first pages of his classic book, which is well worth reading Radetzkymarsch.

"In the battle of Solferino, he (note: Lieutenant Trotta) commanded a platoon as an infantry lieutenant. The battle had been going on for half an hour. Three paces in front of him he saw the white backs of his soldiers. The first row of his platoon was kneeling, the second was standing. Everyone was cheerful and certain of victory. They had eaten copiously and drunk brandy at the expense and in honour of the emperor, who had been in the field since yesterday. Here and there one fell out of line."

The year 1866 was particularly costly for the Austrian Empire, with the loss of Veneto and Lombardy in Italy. At the same time, Prussia took the lead in the German Confederation, the successor organisation to the Holy Roman Empire of the German Nation. For Innsbruck, the withdrawal of the Habsburg Monarchy from the German Confederation meant that it had finally become a city on the western periphery of the empire. The tendency towards so-called Großdeutschen LösungThe German question, i.e. statehood together with the German Empire instead of the independent Austrian Empire, was very pronounced in Innsbruck. The extent to which this German question divided the city became apparent over 30 years later, when the Innsbruck municipal council voted in favour of the Iron Chancellor Bismarck, who was responsible for the fratricidal war between Austria and Germany, wanted to dedicate a street to him. While conservatives loyal to the emperor were horrified by this proposal, the Greater German liberals around Mayor Wilhelm Greil were enthusiastic.

With the Tummelplatz, the Pradl military cemetery and the Kaiserjägermuseum on Mount Isel, the city has several memorials to these bloody conflicts, in which many Innsbruck residents took to the field.