January 1803
8 January 1803 – The salaries of clergy ceased to be seized.
10 January 1803 ‒ Learning of the death in Santo Domingo of his brother-in-law Charles Victor Emmanuel Leclerc, Napoleon Bonaparte put his entourage into mourning.
23 January 1803 – Napoleon Bonaparte left the palace of St. Cloud to return to the Tuileries Palace , left four months earlier.
26 January 1803 – Lucien Bonaparte became a member of the Institute, appointed by his brother.
February 1803
19 February 1803 – Switzerland concluded with France a treaty of defensive alliance.
20 February 1803 – Napoleon Bonaparte said: The Government says with justifiable pride: only England can not now fight against France.
26 February 1803 – By consular decree, each French cardinal would receive 45,000 Francs for his installation costs. An additional annual salary of 30,000 Francs was also granted.
28 February 1803 – First Consul Napoleon Bonaparte inspected, on horseback, works of the Ourcq channel.
March 1803
10 March 1803 – Regulation of the practice of Medicine.
13 March 1803 – Napoleon Bonaparte asked the Minister of Marine how to do the most damage possible to the English trade in the event of a maritime war.
16 March 1803 – Organization of Notaries.
18 March 1803 – King George III of England called for credits in Parliament. He had to face French preparations for war.
24 March 1803 ‒ The Diet of Regensburg adopted the Reces, which fundamentally changed the political balance of Germany.
28 March 1803 – The new French currency would display the head of the First Consul . The value of the Franc was fixed to five grams (0.17637 oz) of silver.
April 1803
1st April 1803 – The names of saints and personages of ancient history became, from that date, the only accepted ones as given names for Public Record Office.
8 April 1803 – Departmental Coucils got the right to vote a salary increase for archbishops and bishops in their dioceses, if circumstances so require.
9 April 1803 – Establishment of the sixteen first auditors at the State Council. Their salary was two thousand Francs a year.
11 April 1803 – Establishment of Pharmacy schools (there were six).
12 April 1803 – A law regulated the operation of factories and workshops. It prohibited coalitions of workers and established the protection of trademarks.
13 April 1803 – Napoleon Bonaparte returned to settle in Saint-Cloud.
14 April 1803 – The Bank of France obtained the exclusive privilege of issuing banknotes, for fifteen years.
16 April 1803 – The levying of sixty thousand conscripts was included in legislation.
30 April 1803 – Was signed in Paris by Robert Livingston, James Monroe, François de Barbé Marbois and Michael Ryan Toussaint the Louisiana Purchase by which the United States of America acquired from France a total of 828,000 sq mi (2,140,000 km²) in Middle America. Price: 80 million Francs, of which 20 million were deducted as compensation to Americans affected by maritime operations.
May 1803
3rd May 1803 – Resumption of Pierre Corneille's Polyeucte at the French Theater, following an express order of First Consul Napoleon Bonaparte.
7 May 1803 – The wages of Cardinal Joseph Fesch, Ambassador of France to Rome, were determined by his nephew to 150,000 Francs plus 100,000 Francs for expenses.
12 May 1803 – Treaty of Amiens was broken. The British Ambassador left Paris.
13 May 1803 – The British government expressed its willingness to keep Malta for ten years. He claimed also that the French had to evacuate Holland.
16 May 1803 – Rupture between France and England.
17 May 1803 – An embargo was imposed by the British government on the French ships and the Netherlands' ones. England seized more than 1,200 vessels and 200 million of goods.
20 May 1803 – The First Consul announced, in a message to the Senate, the Legislative body and the Tribunat, the war with England.
22 May 1803 – Order was given to arrest all Englishmen being in France.
23 May 1803 – Declaration of war by England.
28 May 1803 – One hundred twenty-eight companies of Coast Guard gunners were created.
30 May 1803 – Soldiers on leave were ordered to join without delay their regiments.
June 1803
10 June 1803 – The regulation of high-schools was established by decree.
13 June 1803 – From that day, in the countries gathered to France, all public acts would be written in French.
14 June 1803 – French army was organized for the proposed invasion of Britain, and was named Armée d'Angleterre.
20 June 1803 – The introduction into the French ports of food and goods arriving from British colonies or England became prohibited.
22 June 1803 – The success of the war against England was the subject of public prayers.
24 June 1803 – First Consul began a tour of inspection in Northern France and Belgium.
August 1803
19 August 1803 – An offer of mediation from Russia faced the refusal of England.
21 August 1803 – Georges Cadoudal and some other Chouans, led by an English ship, clandestinely landed at Biville cliff [49.99246, 1.24435], between Dieppe and Le Tréport, in Normandy.
31 August 1803 – Students were exempted from conscription.
September 1803
10 September 1803 – The extraordinary works of bridges and causeways, digging and repair of canals, draining of swamps received an allocation of fifteen million Francs.
20 September 1803 – From First Consul to Jean-Antoine Chaptal, Minister of Interior: I am, citizen Minister, dissatisfied with the city of Paris. The budget of this city for the year XI is not yet finalized while year is over [the year XI ended on 23rd September 1803]. My intention is that these delays cease.
24 September 1803 – Napoleon Bonaparte, wearing National Guard uniform, attended a concert for the Feast of the founding of the Republic.
27 September 1803 – By consular decree: To ensure freedom of the press, no publisher can sell a book before it is presented to a board of review.
Octomber 1803
1st October 1803 – Napoleon Bonaparte decided that there will be erected, in Paris, at the center of the Place Vendôme, a column like the one erected in Rome in honor of Trajan... surmounted by a pedestal supporting the statue of Charlemagne
.
5 October 1803 – A company of interpreters was created. It was intended to be used in the army for the invasion of Britain.
11 October 1803 – Bonaparte himself wrote an instruction for the crews of landing craft.
12 October 1803 – Eleven military depots were created in order to detain conscripts convicted of refractory.
14 October 1803 – The bust of Jean Bart (a famous naval commander and privateer) was installed in the City Hall of Dunkirk.
15 October 1803 – Expulsion of Madame de Staël.
23 October 1803 – The First Consul gave audience to Dr. Guillotin who introduced him, on behalf of the Central Committee of vaccinia, a report on this new mode of inoculation.
November 1803
3rd November 1803 – Napoleon Bonaparte visited the fleet set up in Boulogne and inspected the troops.
18 November 1803 – Back in St. Cloud.
21 November 1803 – Installing the Tuileries Palace for the winter season.
23 November 1803 – The British prisoners of war had to be locked in Verdun if they were civilians, in the citadels of Charlemont and Valenciennes if soldiers or sailors.
24 November 1803 – In Paris, inauguration of the Pont des Arts [48.85859, 2.33762], the first metal bridge in France, the work of the engineer Louis-Alexandre de Cessart; it connected the Louvre Palace to the Institute.
Bonaparte to Charles-Maurice de Talleyrand-Perigord: I am pressed for money: 16 million Francs are due on 1st Vendemiaire [24 September]. I would like the Minister of the Treasury to extricate 16 million Francs of letters of exchange on Spanish Treasury... Letters would be accepted or would not... If they were not, it would be a natural subject of dispute with Spain, whether on the contrary, they are, they will be settled within eight days, and from that moment we have the money arrived in Paris before the end of Frimaire [22 December].
25 November 1803 – Forty students from the military school of Fontainebleau over the age of eighteen should be appointed second lieutenants in advance. Sixty students from Saint-Cyr Prytaneum with the age of sixteen should be appointed quartermaster.
29 November 1803 – Bonaparte to minister Chaptal: I desire a song for the invasion of England ... I know it has been presented several comedies of fact, it should make a choice for them to play in different theaters of Paris, and especially to the camps of Boulogne, Bruges and other places where the army stays.
December 1803
1st December 1803 – Establishment of Workers' booklet.
2nd December 1803 – Order was given to condemn to death the leaders of rebel conscripts from Maine-et-Loire, Vendée and Deux-Sèvres departments (western France).
12 December 1803 – Napoleon Bonaparte asked for information on political opinions, abilities, wealth and probity of candidates for Senate and Legislature, so I can intervene
, says he, whenever it is presented people with bad principles and little regarded.
20 December 1803 – The Legislative Corps lost the right to appoint its chairman.
24 December 1803 – The Academy of Arts of New York elected Napoleon Bonaparte as a member.
25 December 1803 – Charles Nodier was interrogated at police headquarters and taken to the Force jailhouse. He was the author of the libel La Napoleone and had written to the First Consul to denounce himself.
30 December 1803 – Bonaparte visited again Boulogne, inspecting the fleet and visiting new harbors Ambleteuse and Wimereux.