The Siege of Genoa took place in 1747 when an Austrian army under the command of Count Schulenberg launched a failed attempt to capture the capital of the Republic of Genoa. The Austrians had captured and then lost Genoa the previous year and made it the central objective of their strategy for 1747 before they would consider further operations against Naples or an invasion of France. Schulenberg's force reached the outskirts of the city in April, but realising they needed more troops they waited until twelve battalions of infantry from their Sardinian allies arrived in June. The delay allowed the French and Spanish to send reinforcements to the city under Joseph Marie, Duke of Boufflers to bolster the garrison.