# Quadrilatero > Mediated Wiki article. Canonical URL: https://mediated.wiki/source/Quadrilatero > Markdown URL: https://mediated.wiki/source/Quadrilatero.md > Source: https://en.wikipedia.org/wiki/Quadrilatero > Source revision: 1334768962 > License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) Defensive system of the Austrian Empire in Italy This article needs more citations. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Quadrilatero" – news · newspapers · books · scholar · JSTOR (December 2006) (Learn how and when to remove this message) The four fortresses of the *Quadrilatero*. The ***Quadrilatero*** (English: Quadrilateral, for greater specificity often called the "Quadrilateral [fortresses](/source/Fortresses)") is the traditional name of a defensive system of the [Austrian Empire](/source/Austrian_Empire) in the [Lombardy-Venetia](/source/Lombardy-Venetia) region of [Italy](/source/Italy), which connected the fortresses of [Peschiera](/source/Peschiera_del_Garda), [Mantua](/source/Mantua), [Legnago](/source/Legnago) and [Verona](/source/Verona) between the [Mincio](/source/Mincio), the [Po](/source/Po_River), and the [Adige Rivers](/source/Adige_River). The name refers to the fact that on a map the fortresses appear to form the vertices of a [quadrilateral](/source/Quadrilateral). In the period between the end of the [Napoleonic Wars](/source/Napoleonic_Wars) and the [Revolutions of 1848](/source/Revolutions_of_1848), they were the only fully modernized and armed fortresses within the Empire.[1] Starting from c. 1850, supplies and reinforcements were shipped to the positions through the new [Venice](/source/Venice)-[Milan](/source/Milan) railroad. The experience of the [Second Italian Independence War](/source/Second_Italian_Independence_War) of 1859, in which [rifled guns](/source/Rifled_gun) had been used for the first time by the [Italian Army](/source/Italian_Army), pushed the Austrians to build a second line of eight forts, about 4 kilometers from the main line (completed in the spring of 1866), pivoting around [Verona](/source/Verona). ## Gallery - [Verona](/source/Verona) - [Peschiera del Garda](/source/Peschiera_del_Garda) - [Mantua](/source/Mantua) - [Legnago](/source/Legnago) ## See also - [Italian unification](/source/Italian_unification) - [Italian campaigns of the French Revolutionary Wars](/source/Italian_campaigns_of_the_French_Revolutionary_Wars) - [Verona defensive system](/source/Verona_defensive_system) - [Venetian Works of Defence between the 16th and 17th centuries: Stato da Terra – Western Stato da Mar](/source/Venetian_Works_of_Defence_between_the_16th_and_17th_centuries%3A_Stato_da_Terra_%E2%80%93_Western_Stato_da_Mar) [45°17′39″N 10°58′06″E / 45.29417°N 10.96833°E / 45.29417; 10.96833](https://geohack.toolforge.org/geohack.php?pagename=Quadrilatero¶ms=45_17_39_N_10_58_06_E_region:IT_type:landmark_source:kolossus-huwiki) ## References 1. **[^](#cite_ref-1)** Rothenburg, G. *The Army of Francis Joseph*. West Lafayette: Purdue University Press, 1976. p 18. v t e Unification of Italy (Risorgimento) Pre-unitary states Kingdom of Sardinia (House of Savoy) Kingdom of the Two Sicilies Kingdom of Lombardy–Venetia Papal States Grand Duchy of Tuscany Duchy of Parma Duchy of Modena and Reggio Timeline Rimini Proclamation Carbonari Revolutions during the 1820s Revolutions of 1830 Young Italy Neo-Guelphism Revolutions of 1848 Revolutions of 1848 in the Italian states Republic of San Marco Roman Republic Quadrilatero First Italian War of Independence Five Days of Milan Sortie on Mestre Sicilian revolution of 1848 Ten Days of Brescia Belfiore martyrs Crimean War Plombières Agreement Second Italian War of Independence United Provinces of Central Italy Expedition of the Thousand Dictatorship of Garibaldi Siege of Gaeta (1860–1861) Proclamation of the Kingdom of Italy Brigandage in Southern Italy after 1861 Roman Question Third Italian War of Independence Capture of Rome Law of Guarantees Italian entry into World War I Impresa di Fiume Symbols Cockade of Italy Flag of Italy Main leaders Massimo d'Azeglio Agostino Bertani Camillo Benso, Count of Cavour Celso Ceretti Federico Confalonieri Francesco Crispi Giuseppe Garibaldi Daniele Manin Giuseppe Mazzini Bettino Ricasoli Aurelio Saffi Annibale Santore di Santarosa Ruggero Settimo Victor Emmanuel II Literature and philosophy Giovanni Arrivabene Cesare Balbo Giosuè Carducci Carlo Cattaneo Felice Cavallotti Vincenzo Cuoco Giuseppe Ferrari Ugo Foscolo Vincenzo Gioberti Francesco Domenico Guerrazzi Giacomo Leopardi Francesco Lomonaco Goffredo Mameli Alessandro Manzoni Ippolito Nievo Silvio Pellico Carlo Pisacane Gian Domenico Romagnosi Antonio Rosmini Francesco Saverio Salfi Opponents Pope Pius IX Franz Joseph I of Austria Francis II of the Two Sicilies Klemens von Metternich Joseph Radetzky von Radetz Museums Museum of the Risorgimento (Bologna) Museum of the Risorgimento (Milan) Museum of the Risorgimento (Rome) Museum of the Risorgimento (Turin) Tricolour Flag Museum National days Anniversary of the Unification of Italy National Unity and Armed Forces Day Other Altare della Patria Italian irredentism Italian nationalism Italian Romanticism Redshirts Revisionism of Risorgimento Southern question Third Rome --- Adapted from the Wikipedia article [Quadrilatero](https://en.wikipedia.org/wiki/Quadrilatero) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Quadrilatero?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.