How the Knights of Rhodes Faced Down an Empire Before Finally Losing Their Island
In 1522, the Ottoman Empire launched a massive campaign to seize Rhodes, a strategic island stronghold held by the Knights Hospitaller. Despite the Knights’ sophisticated fortifications and a desperate defense, the relentless Ottoman artillery and mining tactics eventually forced a surrender, reshaping control over the Eastern Mediterranean for centuries.
The Knights of St. John had occupied Rhodes since the early 14th century, using the island as a base to harass Ottoman shipping and control trade in the Eastern Mediterranean. Following an unsuccessful Ottoman siege in 1480 and a devastating earthquake in 1481, the Knights undertook an extensive modernization of their defenses. They adopted the trace italienne style, thickening walls, expanding ditches, and constructing outworks designed to withstand heavy artillery fire. By 1521, Grand Master Philippe Villiers de L'Isle-Adam anticipated a renewed attack and further fortified the city, though his pleas for reinforcements from Europe went largely ignored.
The siege began on 26 June 1522, when an Ottoman fleet of 400 ships arrived, followed by Sultan Suleiman and an army of 100,000 men on 28 July. The conflict was a brutal war of attrition. While the Knights held firm against initial infantry assaults, the Ottomans utilized advanced siege engineering, including continuous artillery barrages and underground mining. It is suggested that Turkish miners exploited ancient Hellenistic culverts buried beneath the city to place their explosives. By September, a major mine explosion breached the bastion of England, leading to intense hand-to-hand combat where the defenders narrowly repelled the attackers.
By December, both sides were exhausted, with the Knights facing starvation and the Ottoman forces depleted by disease and combat. Suleiman offered generous surrender terms, which the Knights accepted on 22 December 1522. The agreement allowed the surviving defenders to leave with their weapons and valuables, while local inhabitants were granted tax exemptions and religious protections. On 1 January 1523, the Knights departed for Crete. The fall of Rhodes secured Ottoman maritime communication between Constantinople, Cairo, and the Levant, marking a decisive shift in Mediterranean power. The Knights eventually relocated to Malta in 1530, while the island of Rhodes saw a new demographic shift with the resettlement of 150 Jewish families from Thessaloniki.
Source: Siege of Rhodes (1522)
