Fortress square

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A fortress square (Quadrilatero) is an arrangement of four fortresses , in which an attack on one of the fortresses can always be influenced by one or more of the others.

The construction of a fortress square was not possible everywhere. A favorable location was given by watercourses, with secure crossings being created to protect the traffic between the fortresses. Such a construction offered a weaker army the opportunity to evade an overpowering attack and yet not completely evacuate the field.

The Austrian fortress square on the Mincio and the Adige, the main battlefield from 1848

Kingdom of Lombardy-Veneto

Verona
Peschiera del Garda
Mantova
Legnago

The best known is the northern Italian fortress quadrangle Mantua - Peschiera del Garda - Verona - Legnago , which owed its fame to Radetzky's military operations in 1848. It should help to keep the areas belonging to Austria in Upper Italy in the sense of Austria. This fortress quadrangle was strengthened by the fact that Peschiera and Mantua are connected by the river Mincio , and Verona and Legnago by the Adige , so that the western and the eastern side of the quadrangle also represent a natural obstacle.

Further

  1. Ottoman Empire : Well known are the Ottoman fortress quadrangle in Bulgaria Silistra - Varna - Shumla - Rustschuk and
  2. Russian Empire : the then Russian Novogeorgiewsk - Warsaw - Ivangorod - Brest-Litowsk in today's Poland and Belarus.
  3. German Empire : The forts Langlütjen I , Langlütjen II , Brinkamahof I and Brinkamahof II in the Weser estuary near Bremerhaven formed a smaller fortress square .

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