[2] After several days of skirmishes, on 28 September the Sardinian troops attacked by land and sea, subjecting the port fortress to heavy bombardment.

[5] On September 16 the Sardinian steam frigate Costituzione appeared off the harbour, on a reconnaissance mission with the intent of making surveys on the presence of ships in the port.

On September 18, the same day the defeated general De La Moricière entered Ancona, there was an exchange of artillery between the papal forts and Persano's ships.

However a note in the Italian translation states that the accused soldier was later cleared due to his previous record and the testimony of General Kanzler.

[7]: 178–9 The Sardinian forces continued their advance towards Borgo Pio, today the Archi area, and from this position they bombarded Porte Pia, attempting to break down the massive gate.

At sea, Admiral Persano used small boats to try and break the defensive chain stretched across the mouth of the port and concentrated the fire of his warships on the Forte della Lanterna, eventually blowing up its powder magazine, killing about 125 Habsburg artillerymen.

[6] With the loss of the sea forts of Lazzaretto and Lanterna, General De Lamoricière gave the order to surrender because he understood that no military aid would reach him in time to bolster his resistance.