Editing 1813 (section)

=== April&ndash;June ===
* [[April 8]] &ndash; [[War of 1812]]: Colonel James Ball arrives at [[Fort Meigs]] with 200 [[dragoon]]s.
* [[April 27]] &ndash; [[War of 1812]]: [[Battle of York]] &ndash; United States troops raid and destroy but do not hold the capital of [[Upper Canada]], [[York, Upper Canada|York]] (modern-day [[Toronto]]).
* [[May 1]]&ndash;[[May 9|9]] &ndash; [[War of 1812]]: [[Fort Meigs]] is first besieged, by British allied forces under [[Henry Procter (British Army officer)|General Henry Proctor]] and Chief [[Tecumseh]].
* [[May 2]] &ndash; [[Napoleonic Wars]]: [[Battle of Lützen (1813)|Battle of Lützen]] &ndash; [[Napoleon]] wins against the German alliance.
* [[May 11]] &ndash; [[1813 crossing of the Blue Mountains]]: [[Gregory Blaxland]], [[William Lawson (explorer)|William Lawson]] and [[William Wentworth]] leave on an expedition to cross the [[Blue Mountains (New South Wales)|Blue Mountains]] of Australia.
* [[May 20]]&ndash;[[May 21|21]] &ndash; [[Napoleonic Wars]]: [[Battle of Bautzen (1813)|Battle of Bautzen]] &ndash; [[Napoleon]] again defeats his combined enemies.
* [[May 27]] &ndash; [[War of 1812]]: In Canada, American forces capture [[Fort George, Ontario|Fort George]].
* [[June 1]] &ndash; [[War of 1812]]: [[Capture of USS Chesapeake|Capture of USS ''Chesapeake'']] in [[Boston Harbor]] by British [[Royal Navy]] [[frigate]] {{HMS|Shannon|1806}}.
* [[June 6]]
** [[War of 1812]]: [[Battle of Stoney Creek]] &ndash; A British force of 700 under [[John Vincent (British Army officer)|John Vincent]] defeats an American force three times its size, under [[William H. Winder]] and [[John Chandler]].
** [[1813 crossing of the Blue Mountains]]: [[Gregory Blaxland]], [[William Lawson (explorer)|William Lawson]] and [[William Wentworth]] succeed in crossing the [[Blue Mountains (New South Wales)]] and return home.
* [[June 21]] &ndash; [[Peninsular War]]: [[Battle of Vitoria]] &ndash; A British, Spanish and Portuguese force of 78,000 with 96 guns under [[Arthur Wellesley, 1st Duke of Wellington|Wellington]] defeats a French force of 58,000 with 153 guns under [[Joseph Bonaparte]].