Michael von Melas

Bonaparte led the Army of the Reserve over the Alps in mid-May 1800, reaching Milan on 2 June and threatening Melas' communications.

French forces under Napoleon Bonaparte defeated Austrian forces near Alessandria on 14 June 1800, sealing the success of the Italian campaign.

Following the victory, the Austrians capitulated and signed the Treaty of Lunéville in February 1801, securing France's success in the war.

The Battle of Marengo on 14 June 1800 near Alessandria preceded the armistice negotiations.

Austria agreed to evacuate to the left bank of the Bormida with a forty-eight-hour ceasefire, formalized as the Convention of Alessandria.

Austria agreed to evacuate Italy as far as the Mincio, surrender strongholds, and cede territory between the Chiesa, Oglio, and Po rivers.

Austrians gave up strongholds listed in the convention, and the French dismantled their fortifications, including Genoa on 24 June.

Thugut and the Austrian government refused the terms; Francis II signed a British subsidy treaty hours before receiving the convention.

The Convention of Castiglione extended the armistice on 29 September, but Lunéville negotiations failed and fighting resumed on 22 November 1800.

After 1799 defeats, Masséna replaced the deceased Championnet as commander of the Army of Italy in January 1800.

Before the investment, Miollis garrisoned Genoa with 8,000 troops while Soult held the Bocchetta Pass; Masséna later left 8,000 to defend the city and attacked westward.

Melas advanced with 62,000 men from 4 April, and by 19 April had driven Masséna into Genoa and placed the city under siege.

Ott's 24,000 Austrians besieged Genoa on land while Lord Keith's Royal Navy squadron blockaded it; Masséna had 12,000 fit men on 21 April.

Starvation gripped the garrison; by 20 May 1800 the defenders were eating bread made from starch, linseed oil, and cacao.

On 4 June 1800 the French army was evacuated from Genoa, ending the siege.