October 19 This day during the American Revolution

October 19, 1778 – Siege of Pondicherry was the first military action on the Indian subcontinent following the declaration of war between Great Britain and France in the American War of Independence. A British force besieged the French-controlled port of Puducherry in August 1778, which capitulated after ten weeks of siege. Following the American victory at Saratoga in October 1777, France decided to enter the American War of Independence as an ally to the United States. Word first reached the French Indian colony of Puducherry in July 1778 that France and Britain had recalled their ambassadors, a sign that war was imminent. The British colonies had already received orders to seize the French possessions in India and begun military preparations. Pondicherry was the capital of French India and the largest of France’s possessions on the subcontinent. The British would capture all of the other possessions without resistance in 1778; only Pondicherry was actively defended. The French governor, General Guillaume de Bellecombe, had at his disposal about 700 French troops and 400 sepoys (local Indian troops), and a city whose fortifications were in some disrepair. Pondicherry, as was the case with a number of other European colonial outposts in India, changed hands due to military action several times in the colonial period. Attempts to significantly improve its defences after the last round of battles in the Seven Years’ War were frustrated by political infighting in the French colonial administration. In 1778 the outer works of the city were largely incomplete, with significant elements unfinished and parts of the city exposed to direct attack. Bellecombe immediately set about improving the defences, working as quickly as possible in anticipation of British movements. Key gates were blocked, stockades and gun batteries were constructed along the shore, and anything that might give cover to the British on their advance on the defences was removed or destroyed. Bellecombe also received additional troops before the British arrived. The garrison from Karikal (which the British occupied on 10 August) add about 100 sepoys to the defence, and some of Pondicherry’s inhabitants also took up arms. A small French navy was assembled to counteract the small British navy. Admiral Tronjoli took command of the 64-gun ship of the line Le Brillant, and the rest of the fleet consisted of the frigate La Pourvoyeuse and three smaller ships, La Sartine, Le Lauriston, and Le Brisson. The British colonial administration in Madras placed General Hector Munro in command of an army of nearly 20,000 men, which began arriving within a few miles of Pondicherry on 8 August. By 20 August the full army had arrived, the city was surrounded, and siege operations began. The first noteworthy exchange between the forces was a naval encounter. Admiral Edward Vernon’s fleet also consisted of five ships, carrying slightly less firepower than the French fleet. Vernon commanded the 60-gun ship of the line HMS Rippon, and was assisted by HMS Coventry, HMS Seahorse, HMS Cormorant, and the East India Company’s ship Valentine. In a largely inconsequential two-hour engagement in which Tronjoli was wounded, the French fleet drove Vernon away on 10 August. On 14 August French ships spotted two unknown sails; they were transport ships of the British East India Company. Their captains, apparently unaware of the hostilities, sailed before Pondicherry with British flags flying. Two of the French fleet, Pourvoyeuse and Sartine lazily gave chase. The British merchant ships escaped, but Sartine was captured when she strayed too close to the British squadron on 25 August. The loss of parity between the navies was partially made up by the arrival at Pondicherry of the 26-gun frigate Elizabeth, another private ship that had been pressed into service in the French fleet. On 20 August, the British fleet, now six ships, appeared again. The French fleet, although it had been augmented by Elizabeth, was forced to leave Le Brisson in the harbour due to damage sustained in the first engagement, and was thus at a disadvantage. The next day, Tronjoli sailed the rest of the fleet south. Sources disagree on whether or not battle was offered or attempted on either side, but apparently no battle took place, and Tronjoli continued south. Bellecombe was surprised and dismayed to learn on 2 September that Tronjoli had sailed for Île de France, leaving Elizabeth and La Pourvoyeuse behind. The British troops were not noticeably active in their siege operations until September. Bellecombe used the remaining time to further strengthen the defences, constructing more dikes and iron-cladding the powder magazine. He also repeatedly had to stop the ineffective fire of cannon at the distant British positions. On the night of 1 September the British advanced a force of about 300 as cover for engineers to begin siege operations. Two positions were identified for attack; the northwest bastion, and the southernmost bastion. Batteries were established to cover this work, and a third battery was placed to the southwest on 3 September that was positioned to enfilade the French defences. Bellecombe’s response was to send out a few hundred men to feint an attack on the southern battery. This drew nearly 3,000 British troops within reach of the French guns, which inflicted significant damage with only a single French death. The British siege operation proceeded throughout September, often under heavy fire. British batteries moved progressively closer to the walls, inflicting heavy damage within the city. The hospital had to be evacuated, and the powder magazine (a particular target of the British guns) was also emptied. On 19 September a British cannonball killed the commander of the French artillery. By 24 September breaches were beginning to show in the bastions under attack, and by 6 October the British trenches had reached the inner ditches, with additional gun batteries doing significant damage along the entire French works. On 25 September the French attempted a nighttime sortie to destroy the southern battery. The effort was abandoned when secrecy was lost (a sentry was disarmed but not killed, so he was able to raise the alarm) and when the company lost its way. A second sortie on 4 October was a little more successful. The southwest gun battery was reached while its crew was asleep; the guns were spiked (albeit poorly enough that they were soon back in service), and some of the crew were slaughtered. Bellecombe also received a minor injury after a musket ball struck him on 4 October, but was able to continue leading the defence. Between 6 and 13 October the British siege operations continued, but heavy rains hampered them. The British succeeded in draining the northern ditch, which the French unsuccessfully attempted again to flood. On 14 October the walls of the two bastions the British had targeted lay in ruins, and preparations began for an assault. Bellecombe was also running out of ammunition. After holding a war council on 15 October, he sent a truce flag to Munro the next day. He signed the terms of capitulation on 18 October. The French force of less than 1,500 had withstood a siege of nearly eighty days by a British force that numbered 20,000. The defenders’ losses were high: more than 300 French and nearly 150 sepoy casualties, along with more than 200 civilian casualties. The British suffered more than 900 casualties. The French defenders were allowed to march out with full colours, and were eventually returned to France.


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