Siege of Tortona

Siege of Tortona
Part of Guelphs and Ghibellines
Date13 February – 18 April 1155
(2 months and 5 days)
Location44°53′39.001″N 8°51′56.002″E / 44.89416694°N 8.86555611°E / 44.89416694; 8.86555611
Result Imperial victory
Belligerents
Holy Roman Empire
Commune of Pavia
Margraviate of Montferrat
Commune of Tortona
Commune of Milan
Commanders and leaders
Frederick I, Holy Roman Emperor Obizzo Malaspina
Strength

5,400–7,200+


5,400–7,200
1,800 knights[1]
Pavian militia
Montferrat's forces

300+


100 knights
200 archers
Tortonian militia
Malaspina's men
Casualties and losses
Unknown Garrison captured
City burned
Siege of Tortona is located in Italy
Siege of Tortona
Location within Italy
Siege of Tortona is located in Mediterranean
Siege of Tortona
Siege of Tortona (Mediterranean)

The siege of Tortona in 1155 was the first major military engagement resulting from Holy Roman Emperor Frederick Barbarossa's ambition to enforce Imperial hegemony in Italy.

  1. ^ Loud 2014, p. 160.