Those are Service Ribbons, which denote which medals a soldier has been awarded without having the medals themselves displayed on their uniform.
Yours appears to be from a British or Commonwealth soldier during World War 2. Your ribbons are from a Polish Soldier operating under British Commonwealth Command in Italy during World War 2, possibly as part of the II Corps (found by extrapolating from your username).
The medals these represent (that I have found are),
- The War Medal 1939-1945
- The Italy Star
- The 1939-1945 Star (Reversed)
- The Army Medal for War 1939-1945
- Possibly the (Italian) Medal of Military Valor
I am not certain of the fifth ribbon's identity, but it seems to match, and it is possible that it could have been awarded after September 8th when Italy signed the armistice and joined the Allies.