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Today is: July 21
Scroll to explore events active on this date.
For the current year, this category includes: 4098 events.
Category: Military, Firearms and Police
Highlighting global events relating to military, policing, and weapons.
This category includes military, military careers, military actions, events related to policing, police, sheriff, secret services, espionage, war, conflicts, weapons and firearms.
Military Events
Radio Day, Intl. Amateur (1924): April 18
Daily
The National Association for Amateur Radio (ARRL) and radio enthusiasts celebrate World Amateur Radio Day each year on the anniversary of the founding of the International Amateur Radio Union (IARU), Apri...
January
John Parker Day (1775): April 19
Daily
John Parker was a militiaman during the American Revolution. On April 19, 1775, on Lexington Green, Massachusetts Bay, he said, "Stand your ground. Don't fire unless you are fired upon—but, if they mean t...
January
Oklahoma City Bombing (US-OK)(1995): April...
Daily
April 19, 1995, is the day of the Oklahoma City Bombing, which killed 168 people, and the terrorist responsible was an American citizen.
January
Patriots' Day, (US-FL)(1775): April 19
Daily
Patriots' Day in Florida marks the first death in the American Revolution at Lexington and Concord on April 19, 1775.
January
Columbine Massacre Anniversary (1999): Apr...
Daily
On April 20, 1999, two students from Columbine High School in Littleton, Colorado, entered the school, heavily armed, and proceeded to murder twelve of their classmates and a teacher. The two shooters the...
January
Patriots' Day (US-MA, ME)(1775): April 21
Daily
Patriots' Day (not to be confused with National Patriot Day) is a civic holiday in Massachusetts and Maine (also known as Patriot Day in Maine). It commemorates the anniversary of the Battles of Lexingto...
January
San Jacinto Day, (US-TX)(1836): April 21
Daily
The largest and one of the most critical battles in Texas' history—the Battle of San Jacinto—was fought on April 21, 1836. The battle delivered Texas independence from Mexico and is celebrated statewide w...
January
Tiradentes Day (BR)(1789): April 21
Daily
Joaquim Jose da Silva Xavier, nicknamed Tiradentes (tooth puller), was a dentist in the Portuguese colony of Brazil. He led an uprising against the colonizers in 1789. He was executed on April 21, 1792, a...
January
Armenian Genocide Day of Remembrance (1915...
Daily
Most Americans think the holocaust in Germany during the 1930s and 1940s was the first of its kind, believing then was the first time concentration camps were used, mass gassings and cattle cars to transp...
January
Easter Rebellion (IE)(1916): April 24
Daily
The Easter Rebellion, also known as the Easter Rising, was an armed insurrection in Dublin, Ireland, from April 24 to April 29, 1916. Irish republicans organized the uprising seeking to end British rule i...
January
Multilateralism and Diplomacy, Intl Day: A...
Daily
Multilateralism refers to cooperation between at least three states based on shared norms and values, involving consultation, inclusion, and solidarity. It is a method of cooperation and an organizational...
January
ANZAC Day (AU)(1915): April 25
Daily
ANZAC is an acronym for the Australian and New Zealand Army Corps. Anzac Day marks the anniversary of the first battle fought by this joint nation force on April 25, 1915, at the battle of Gallipoli aga...
January
Liberty Day (PT)(1974): April 25
Daily
Liberty Day marks April 25, 1974, Portugal's Carnation Revolution. This peaceful coup removed the authoritarian government of Estate Novo, restoring democracy, unseating the long-serving dictator, and sma...
January
Sinai Day (EG)(1982): April 25
Daily
On April 25, 1982, the state of Israel officially returned the Sinai Peninsula to the state of Egypt as part of a peace agreement. Israel conquered the territory in 1967. Sinai Day is a national holiday...
January
Chornobyl Disaster Remembrance Day, Intl....
Daily
On April 26, 1986, reactor number four at the Chornobyl Nuclear Power Plant outside the city of Pripyat exploded. It is the most significant nuclear accident to date. In 2016, the United Nations set asid...
January
Confederate Memorial Day (US-FL)(1865): Ap...
Daily
Confederate Memorial Day is observed in most of the former states of The Confederacy on different days. In some cases, like Georgia, it is no longer referred to as Confederate Memorial Day but rather as a...
January
Morse Code Day, Ntl. (1791): April 27
Daily
National Morse Code Day marks the anniversary of the birth of Samuel F. B. Morse, the American artist, and inventor who designed and developed the first successful electromagnetic (magnetism caused by ele...
January
Sultana Disaster Anniversary (US-AR, TN)(1...
Daily
On April 27, 1865, at approximately 2:00 AM, the day after President Lincoln's assassination and after the end of the Civil War, about 1,168 (actual total unknown) Union soldiers, civilian passengers, and...
January
Confederate Memorial Day (US-AL)(1865): Ap...
Daily
Confederate Memorial Day occurs in several former states of the Confederacy on different days of the year. In some cases it is no longer referred to as Confederate Memorial Day but rather as a state holid...
January
Confederate Memorial Day (US-MS)(1865): Ap...
Daily
Confederate Memorial Day occurs in several former states of the Confederacy on different days of the year. In some cases it is no longer referred to as Confederate Memorial Day but rather as a state holid...
January
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