* 1979 – A Provisional Irish Republican Army bomb kills British World War II admiral Louis Mountbatten and three others while they are boating on holiday in Sligo, Republic of Ireland.

Disraeli's proposal to extend the tax to Ireland gained him further enemies, and he was also hampered by an unexpected increase in defence expenditure, which was forced on him by Derby and Sir John Pakington ( Secretary of State for War and the Colonies ) ( leading to his celebrated remark to John Bright about the " damned defences ").

* Bloody Sunday ( 1920 ), a day of violence in Dublin, Ireland during the Irish War of Independence

* Bloody Sunday ( 1921 ), a day of violence in Belfast, Northern Ireland during the Irish War of Independence

Since the Irish War of Independence, the name ' Boxing Day ' is used only by the authorities in Northern Ireland, which remains part of the UK.

Legislation introducing Home Rule, i. e. limited self-government for Ireland within the United Kingdom, was passed by the British parliament in 1914, but its implementation was immediately postponed because of the outbreak of the First World War.

The second wave from Britain and Ireland was encouraged to settle in Canada after the War of 1812 by the governors of Canada, who were worried about anti-English sentiment among its citizens.

FBI records show that 85 % of COINTELPRO resources targeted groups and individuals that the FBI deemed " subversive ," including communist and socialist organizations ; organizations and individuals associated with the civil rights movement, including Martin Luther King, Jr. and others associated with the Southern Christian Leadership Conference, the National Association for the Advancement of Colored People, and the Congress of Racial Equality and other civil rights organizations ; black nationalist groups ; the American Indian Movement ; a broad range of organizations labeled " New Left ", including Students for a Democratic Society and the Weathermen ; almost all groups protesting the Vietnam War, as well as individual student demonstrators with no group affiliation ; the National Lawyers Guild ; organizations and individuals associated with the women's rights movement ; nationalist groups such as those seeking independence for Puerto Rico, United Ireland, and Cuban exile movements including Orlando Bosch's Cuban Power and the Cuban Nationalist Movement ; and additional notable Americans — even Albert Einstein, who was a member of several civil rights groups, came under FBI surveillance during the years just prior to COINTELPRO's official inauguration .< ref >

* Criminal Investigation Department ( Ireland ), a police unit during the Irish Civil War ( 1922 – 23 )

This rate is a small fraction of the millions killed in the Second Sudanese Civil War and Cambodian Civil War, for example, but excludes several highly publicized conflicts, such as The Troubles of Northern Ireland and the struggle of the African National Congress in Apartheid-era South Africa.

Between 1594 and 1603, Elizabeth faced her most severe test in Ireland during the Nine Years ' War, a revolt that took place at the height of hostilities with Spain, who backed the rebel leader, Hugh O ' Neill, Earl of Tyrone.

The Rising was mounted by Irish republicans with the aims of ending British rule in Ireland and establishing the Irish Republic at a time when the British Empire was heavily engaged in the First World War.

* The 2008 documentary film called Frederick Douglass and the White Negro tells the story of Frederick Douglass in Ireland and the relationship between African Americans and Irish Americans during the American Civil War.

However, this was followed by the protracted Williamite War in Ireland and Dundee's rising in Scotland.

After the end of World War I, the majority of the United Kingdom gunpowder manufacturers merged into a single company, " Explosives Trades limited "; and number of sites were closed down, including those in Ireland.

Although the term is not documented until 1900, a conjectural etymology for the term is that it originated in 17th century Ireland for Protestant supporters of King William III during the Williamite War.

When Chilean troops occupied Lima during the War of the Pacific in 1881, they put in charge certain Patricio Lynch, whose grandfather came from Ireland to Argentina and then moved to Chile.

*" The Emergency " ( Ireland during World War II )

Thereafter, the IRA waged a guerrilla campaign against British rule in Ireland in the 1919 – 21 Irish War of Independence.

* 1942 – World War II: The first United States forces arrive in Europe landing in Northern Ireland.

The late 1980s and 1990s saw the production of a series of critically acclaimed and popular films such as Hidden Agenda, one of the rare films dealing with the political troubles in Northern Ireland, Carla's Song set partially in Nicaragua, and Land and Freedom examining the Republican resistance in the Spanish Civil War.

* 1689 – The Williamite War in Ireland begins.

Masts can be procured from Nova Scotia, and Iron in plenty from the Ores of this Country ; but as it is impracticable to carry on a Naval War without Hemp, it is materially necessary to promote the growth of it in this Country and Ireland ”.

* 1914 – World War I: The British super-dreadnought battleship HMS Audacious ( 23, 400 tons ), is sunk off Tory Island, north-west of Ireland, by a minefield laid by the armed German merchant-cruiser Berlin.

After the Battle of Gettysburg, Lincoln clearly understood that his military decisions would be more effectively carried out by conveying his orders through his War Secretary or his general-in-chief on to his generals, who resented his civilian interference with their own plans.

Considered by Confederate President Jefferson Davis to be the finest general officer in the Confederacy before the emergence of Robert E. Lee, he was killed early in the Civil War at the Battle of Shiloh and was the highest-ranking officer, Union or Confederate, killed during the entire war.

* McPherson, James M. Battle Cry of Freedom: The Civil War Era.

* Daniel, Larry J. Shiloh: The Battle That Changed the Civil War.

This refusal to accept any renunciation of allegiance to the Crown led to conflict with the United States over impressment, and then led to further conflicts even during the War of 1812, when thirteen Irish American prisoners of war were executed as traitors after the Battle of Queenston Heights ; Winfield Scott urged American reprisal, but none was carried out.

* 1862 – American Civil War: The Battle of Shiloh begins – in Tennessee, forces under Union General Ulysses S. Grant meet Confederate troops led by General Albert Sidney Johnston.

* 1865 – American Civil War: The Battle of Sayler's Creek – Confederate General Robert E. Lee's Army of Northern Virginia fights its last major battle while in retreat from Richmond, Virginia.

* 1945 – World War II: the Battle of Slater's Knoll on Bougainville comes to an end.

* 1450 – Battle of Formigny: Toward the end of the Hundred Years ' War, the French attack and nearly annihilate English forces, ending English domination in Northern France.

* 1632 – Battle of Rain: Swedes under Gustavus Adolphus defeat the Holy Roman Empire during the Thirty Years ' War.

* 1918 – Battle of Ambos Nogales: U. S. Army forces skirmish against Mexican Carrancistas and their German advisors in the only battle of World War I fought on American soil.

* 1777 – American Revolutionary War: The bloody Battle of Oriskany prevents American relief of the Siege of Fort Stanwix.

* 1870 – Franco-Prussian War: the Battle of Wörth results in a decisive Prussian victory.

* 1914 – World War I: First Battle of the Atlantic – two days after the United Kingdom had declared war on Germany over the German invasion of Belgium, ten German U-boats leave their base in Heligoland to attack Royal Navy warships in the North Sea.

* 1915 – World War I: Battle of Sari Bair – the Allies mount a diversionary attack timed to coincide with a major Allied landing of reinforcements at Suvla Bay.

* 1917 – World War I: Battle of Mărăşeşti between the Romanian and German armies begins.

* 48 BC – Caesar's Civil War: Battle of Pharsalus – Julius Caesar decisively defeats Pompey at Pharsalus and Pompey flees to Egypt.

* 378 – Gothic War: Battle of Adrianople – A large Roman army led by Emperor Valens is defeated by the Visigoths in present-day Turkey.

* 1862 – American Civil War: Battle of Cedar Mountain – At Cedar Mountain, Virginia, Confederate General Stonewall Jackson narrowly defeats Union forces under General John Pope.

* 1942 – World War II: Battle of Savo Island – Allied naval forces protecting their amphibious forces during the initial stages of the Battle of Guadalcanal are surprised and defeated by an Imperial Japanese Navy cruiser force.

* 1704 – War of the Spanish Succession: Battle of Blenheim – English and Imperial forces are victorious over French and Bavarian troops.

* 1920 – Polish – Soviet War: the Battle of Warsaw begins and will last till August 25.

Also while in Washington, Doubleday testified against George Meade at the United States Congress Joint Committee on the Conduct of the War, criticizing him harshly over his conduct of the Battle of Gettysburg.

* 216 BC – Second Punic War: Battle of Cannae – The Carthaginian army led by Hannibal defeats a numerically superior Roman army under command of consuls Lucius Aemilius Paullus and Gaius Terentius Varro.