In the Spring of 1848 a provisional government sprang up in Milan after the Austrians under Field Marshall Radetzky withdrew their troops eastwards to the “Quadrilateral”.
The Provisional Government sought protection from Piedmont under King Charles Albert.
At the same time they raised their own forces.

Here are the Milan Line Infantry of the National Guard in field attire.

* Prior to the Austrians retiring, protests included the Milanese refusing to smoke as the Austrian Government had a monopoly on tobacco sales!

Within a year the uprisings were squashed and Field Marshall Radetzky was a hero of the Empire – complete with Johann Strauss Senior composing the Radetzky March to celebrate the Austrian victory at Custoza in July 1848.