1718 – War of the Quadruple Alliance: Great Britain declares war on Spain

17 December

The War of the Quadruple Alliance (1718–1720) was a result of the ambitions of King Philip V of Spain, his wife, Elisabeth Farnese, and his chief minister Giulio Alberoni to retake territories in Italy and to claim the French throne.

It saw the defeat of Spain by an alliance of Britain, France, Austria (then a state of the Holy Roman Empire), and the Dutch Republic. Savoy later joined the coalition as the fifth ally. Although fighting began as early as 1717, war was not formally declared until December 1718. It was brought to an end by the Treaty of The Hague in 1720.

Britain and France:

The war provided a unique example during the eighteenth century when Britain and France were on the same side. It came during a period between 1716 and 1731 when the two countries were allies. Spain would later join with France in the Bourbon Compact, and the two would become enemies of the British once more.

942 – Assassination of William I of Normandy

17 December

William I Longsword (c. 893 – 17 December 942) was the second ruler of Normandy, from 927 until his assassination.

He is sometimes anachronistically dubbed "Duke of Normandy", even though the title duke (dux) did not come into common usage until the 11th century. William was known at the time by the title count (Latin comes) of Rouen. Flodoard—always detailed about titles—consistently referred to both Rollo and his son William as principes (chieftains) of the Norse.

The Assassination:

William Longsword attacked Flanders in 939 and Arnulf I, Count of Flanders, and Louis IV, King of France, retaliated by attacking Normandy. Arnulf captured the castle of Montreuil-sur-Mer expelling Herluin, Count of Ponthieu. Herluin and William Longsword cooperated to retake the castle. William was excommunicated for his actions in attacking and destroying several estates belonging to Arnulf.

William pledged his loyalty to King Louis IV when they met in 940 and, in return, he was confirmed in lands that had been given to his father, Rollo. Almost three years later, on 17 December 942 at Picquigny on the Somme, William Longsword was ambushed and killed by followers of Arnulf while at a peace conference to settle their differences.

1778 – ARW: British and French fleets clash in the Battle of St. Lucia

15 December

The Battle of St. Lucia was a naval battle fought off the island of St. Lucia in the West Indies during the Anglo-French War on this day in 1778, between the British Royal Navy and the French Navy.

On 7 September 1778, the French governor of Martinique, the marquis de Bouillé, surprised and captured the British island of Dominica. On 4 November, French Admiral Jean Baptiste Charles Henri Hector. comte d'Estaing sailed for the West Indies from the port of Boston. On that same day, Commodore William Hotham was dispatched from Sandy Hook, New York, to reinforce the British fleet in the West Indies. Hotham sailed with "five men of war, a bomb vessel, some frigates, and a large convoy." The convoy Hotham was escorting consisted of 59 transports carrying 5,000 British soldiers under Major General Grant. The French fleet was blown off course by a violent storm, preventing it from arriving in the Caribbean ahead of the British. Admiral Samuel Barrington, the British naval commander stationed on the Leeward Islands, joined the newly arrived Commodore Hotham on 10 December at the island of Barbados. Grant's men were not permitted to disembark and spent the next several days aboard their transports. Barrington and Hotham sailed for the island of St. Lucia on the morning of 12 December.

On the evening of 13 December and morning of 14 December, Major General James Grant, supported by additional troops under Brigadier General William Medows and Brigadier General Robert Prescott, landed at Grand Cul de Sac, St. Lucia. Grant and Prescott took control of the high ground around the bay, while Medows continued on and took Vigie the following morning (14 December). On 14 December the French fleet under d’Estaing arrived, forcing Admiral Barrington to move his ships into line of battle and forgo his plan of moving the transports into Carénage Bay.

Admiral Barrington was alerted to the presence of the French fleet by the frigate Ariadne and organised his line of battle so that Isis and his three frigates (Venus, Aurora, and Ariadne) were close to shore guarding the windward approach, and he placed his flagship, Prince of Wales, toward the leeward. Barrington in a defensive strategy placed his transports inside the bay but behind his battle line which took him the entire evening of 14 December. By 1100 hours the next day, most of the transports had been safely tucked behind his line.

At 1100 hours 15 December Admiral d’Estaing approached St. Lucia with ten ships of the line, and was fired on by one of the shore batteries. D’Estaing then moved to engage Barrington from the rear, and a “warm conflict” raged between the two fleets, with the British supported by two shore batteries. D’Estaing was repulsed but succeeded in reforming his line of battle. At 1600 hours d’Estaing renewed his assault by attacking Barrington’s centre with twelve ships of the line. Again, heavy fire was exchanged and the French were eventually repulsed for a second time.

On 16 December Admiral d’Estaing appeared to be preparing for a third assault against Admiral Barrington’s line, but then sailed away towards the windward. On the evening of 16 December d’Estaing anchored in Gros Islet Bay with "ten frigates and twelve sail of the line, &c." Admiral d’Estaing’s failure to break Barrington’s line on 15 December spelled doom for the local French garrison, which surrendered on 28 December.

1890 – Charles de Gaulle, French general and politician is born

22 November

Charles André Joseph Marie de Gaulle (22 Nov, 1890 – 9 Nov, 1970) was a French general, resistant, writer and statesman.

He was the leader of Free France (1940–44) and the head of the Provisional Government of the French Republic (1944–46). In 1958, he founded the Fifth Republic and was elected as the 18th President of France, until his resignation in 1969. He was the dominant figure of France during the Cold War era and his memory continues to influence French politics.

1180 – Phillip II becomes king of France

Philip II, called Philip Augustus (21 August 1165 – 14 July 1223) was a King of France from the House of Capet who reigned from 1180 to 1223.

Philip's predecessors had been known as kings of the Franks, but from 1190 onward, Philip became the first French monarch to style himself king of France. The son of King Louis VII and his third wife, Adèle of Champagne, he was originally nicknamed "God-given" because he was the first son of Louis VII, born late in his father's life. Philip was given the nickname "Augustus" by the chronicler Rigord for having extended the Crown lands of France so remarkably.