Editing 1799 (section)

=== July–September ===
* [[July 7]] – [[Ranjit Singh]]'s men take their positions outside [[Lahore]].
* [[July 12]] – [[Ranjit Singh]] captures [[Lahore]] from the [[Bhangi Misl]], a key step in establishing the [[Sikh Empire]], and becoming [[Maharaja]] of the [[Punjab region|Punjab]].
* [[July 15]] – In the Egyptian port city of [[Rosetta]], French Captain Pierre Bouchard finds the [[Rosetta Stone]].
* [[July 25]] – At [[Aboukir]], Egypt, [[Napoleon]] defeats 10,000 [[Ottoman Empire|Ottoman]] [[Mamluk]] troops under [[Mustafa Pasha (Egypt)|Mustafa Pasha]].
* [[August 15]] – War of the Second Coalition: [[Battle of Novi (1799)|Battle of Novi]] – the defeat of [[Barthélemy Catherine Joubert|Barthélemy Joubert]]'s army by [[Suvorov]]'s Austrian–Russian troops.
* [[August 27]] – [[War of the Second Coalition]] – [[Anglo-Russian invasion of Holland]]: Britain and Russia send an expedition to the [[Batavian Republic]].
* [[August 29]] – [[Pope Pius VI]], at the time the longest reigning Pontiff of the Roman Catholic Church, dies as a [[prisoner of war]] in the citadel of the French city of [[Valence, Drôme|Valence]], after 24½ years of rule.
* [[August 30]] – Anglo-Russian invasion of Holland – [[Vlieter Incident]]: A squadron of the [[Batavian Republic]]'s navy, commanded by Rear-Admiral [[Samuel Story]], surrenders to the British Royal Navy, under Sir [[Ralph Abercromby]] and Admiral Sir Charles Mitchell, near [[Wieringen]], without joining action.
* [[September 10]] – Anglo-Russian invasion of Holland - [[Battle of Krabbendam]]: the Russo-British expedition force defends its initial gains from attacks by Franco-Dutch forces.<ref>* {{in lang|nl}} {{Aut|[[Cornelis Rudolphus Theodorus Krayenhoff|Krayenhoff, C.R.T.]]}} (1832) ''Geschiedkundige Beschouwing van den Oorlog op het grondgebied der Bataafsche Republiek in 1799.'' J.C. Vieweg [https://books.google.com/books?id=vFtKAAAAMAAJ&dq=Guericke+Keeten&pg=PA68] {{Webarchive|url=https://web.archive.org/web/20221112123926/https://books.google.com/books?id=vFtKAAAAMAAJ&pg=PA67&lpg=PA67&dq=Guericke+Keeten&source=bl&ots=Ng0K4OxDRd&sig=SwRgFQxbDVeVqlWDPn6dJIENn8s&hl=en&ei=sDLmSbGnEaPoswPOsJj1AQ&sa=X&oi=book_result&ct=result&resnum=7#PPA68,M1|date=November 12, 2022}} Page=115</ref>
* [[September 18]] – Victory of [[Archduke Charles]] and the Austrian army at the [[Battle of Mannheim (1799)]] over a French force under [[Jacques Léonard Muller]]
* [[September 19]] – Anglo-Russian invasion of Holland - [[Battle of Bergen (1799)|Battle of Bergen]]: Franco-Dutch forces hold their ground against the Russo-British expedition force.
* [[September 23]] – [[Frederick North, 5th Earl of Guilford]], the [[Governor of British Ceylon]] (now [[Sri Lanka]]), issues a proclamation declaring that the laws of the Netherlands for the conquered [[Dutch Ceylon]] shall be enforced until superseded by new laws.<ref>{{cite book|first=T.|last=Nadaraja|title=The Legal System of Ceylon in Its Historical Setting|publisher=E. J. Brill|year=1972|page=181}}</ref>
* [[September 29]] – the [[Roman Republic (18th century)|Second Roman Republic]], a [[puppet state]] formed by the French Army after their dissolution of the [[Papal States]] and the occupation of [[Rome]], is dissolved 19 months after its creation on February 15, 1798.<ref>{{cite book|chapter=The Protagonists and the Principal Phases of the Roman Republic of 1798 to 1799|first=Marina|last=Formica|title=Tosca's Prism: Three Moments of Western Cultural History|editor=Burton, Deborah |display-editors=etal|publisher=Northeastern University Press|year=2004|page=67}}</ref>
* [[September 30]] – [[Suvorov's Swiss campaign]] – [[Battle of Muottental|Battle of the Muottental]]: the rout of Masséna's French troops by Suvorov's army.