919day.year
The second Fatimid invasion of Egypt begins, when the Fatimid heir-apparent, al-Qa'im bi-Amr Allah, sets out from Raqqada at the head of his army.
The second Fatimid invasion of Egypt begins in 919 as Prince al-Qa'im bi-Amr Allah leads his army from Raqqada into the Nile Valley.
In 919, al-Qa'im bi-Amr Allah, heir-apparent of the Fatimid Caliphate, mobilized his forces at the capital Raqqada. The campaign aimed to wrest control of Egypt from the Abbasid-aligned Tulunid regime. Egypt's rich lands and strategic position made it a crucial prize for the Isma'ili Shi'a Fatimids. Despite logistical challenges and strong resistance from local defenders, the invasion marked a bold assertion of Fatimid ambition. It set the stage for eventual conquest under later caliphs in 969. The incursion highlights the shifting power struggles in the medieval Islamic world.
919
second Fatimid invasion
Egypt
al-Qa'im bi-Amr Allah
Raqqada
1242day.year
During the Battle on the Ice of Lake Peipus, Russian forces, led by Alexander Nevsky, rebuff an invasion attempt by the Teutonic Knights.
In 1242, Russian forces under Prince Alexander Nevsky repel the Teutonic Knights at the Battle on the Ice on Lake Peipus, preserving Novgorod’s independence.
On April 5, 1242, Prince Alexander Nevsky of Novgorod led his militia against the Teutonic Knights on the frozen expanse of Lake Peipus. The Germanic crusaders sought to expand their influence over Orthodox Russian territories. Nevsky’s troops exploited the brittle ice and familiarity with the terrain to outmaneuver the heavy cavalry of the knights. The shattering surrender of the crusaders ended the immediate threat to Novgorod’s autonomy. This victory became legendary in Russian history and bolstered Nevsky’s reputation as a defender of the realm. The battle is remembered as a pivotal moment in medieval Northern Europe’s power dynamics.
1242
Battle on the Ice
Lake Peipus
Russian
Alexander Nevsky
Teutonic Knights
1818day.year
In the Battle of Maipú, Chile's independence movement, led by Bernardo O'Higgins and José de San Martín, win a decisive victory over Spain, leaving 2,000 Spaniards and 1,000 Chilean patriots dead.
Patriot forces under Bernardo O'Higgins and José de San Martín win the Battle of Maipú in 1818, securing Chilean independence from Spain.
On April 5, 1818, Chilean patriot forces commanded by Bernardo O'Higgins and José de San Martín delivered a crushing defeat to the Spanish royalists at Maipú, near Santiago. The battle concluded a campaign that had crossed the Andes from Argentina earlier that year. Approximately 3,000 combatants fell, including 2,000 Spanish soldiers and 1,000 Chilean patriots. Victory at Maipú ensured the survival of the nascent Republic of Chile and ended major Spanish efforts to reconquer the territory. The triumph bolstered morale across South America during its broader wars of independence. The Battle of Maipú remains celebrated as a cornerstone of Chile’s national identity.
1818
Battle of Maipú
Chile
Bernardo O'Higgins
José de San Martín
1862day.year
American Civil War: The Battle of Yorktown begins.
The Battle of Yorktown begins the Union's Peninsula Campaign against Confederate defenses in Virginia.
On April 5, 1862, Union forces under Major General George B. McClellan commenced operations against Confederate defenses at Yorktown, Virginia.
The engagement marked the opening of the Peninsula Campaign, aiming to capture Richmond, the Confederate capital.
Union troops advanced along the York River, supported by naval gunfire from warships in Chesapeake Bay.
Confederate General John B. Magruder fortified the Warwick Line and used deceptive maneuvers to delay the Union assault.
McClellan's siege tactics brought heavy artillery into play but led to a protracted standoff rather than a swift victory.
After weeks of entrenchment, Confederate forces withdrew on May 4, 1862, buying time to reinforce Richmond's defenses.
The Battle of Yorktown thus became a pivotal moment, highlighting both the strengths and limitations of Union leadership.
1862
American Civil War
Battle of Yorktown
1879day.year
Bolivia declares war on Chile, and Chile declares war on Peru, starting the War of the Pacific.
The War of the Pacific begins as Bolivia and Chile declare war, drawing Peru into the conflict over mineral-rich territories.
On April 5, 1879, Bolivia declared war on Chile, escalating a dispute over nitrate-rich lands in the Atacama Desert.
Chile accused Bolivia's ally, Peru, of breaching a secret defense treaty and responded by declaring war on Peru later that day.
This tripartite conflict became known as the War of the Pacific and lasted until 1884.
Chilean forces secured decisive victories, eventually controlling key coastal regions and valuable nitrate deposits.
Bolivia became landlocked after losing its Litoral province, while Peru ceded the Tarapacá region to Chile.
The war reshaped national boundaries, spurred regional rivalries, and transformed the economic landscape of the Pacific coast.
1879
Bolivia
Chile
Peru
War of the Pacific
1938day.year
Spanish Civil War: Two days after the Nationalist army occupied the Catalan city of Lleida, dictator Francisco Franco decrees the abolition of the Generalitat (the autonomous government of Catalonia), the self-government granted by the Republic, and the official status of the Catalan language.
Franco abolishes Catalonia's autonomous government and its official language amid the Spanish Civil War.
On April 5, 1938, two days after Nationalist forces seized Lleida, General Francisco Franco issued a decree abolishing the Generalitat of Catalonia.
The Generalitat had served as Catalonia's autonomous government under the Republican regime.
Franco's order also revoked the official status of the Catalan language in schools and public administration.
These measures aimed to suppress regional identity and strengthen centralized Nationalist control.
The decree delivered a severe blow to Catalan institutions, which remained banned until the late 1970s.
This assault on Catalan autonomy left a lasting imprint on Spain's regional dynamics and collective memory.
It exemplified the broader cultural repression carried out by Franco's regime during and after the war.
1938
Spanish Civil War
Nationalist army
Lleida
Francisco Franco
Generalitat
Catalonia
self-government granted by the Republic
Catalan language
1942day.year
World War II: Adolf Hitler issues Fuhrer Directive No. 41 summarizing Case Blue, including the German Sixth Army's planned assault on Stalingrad.
Adolf Hitler orders the German Sixth Army to prepare for a major assault on Stalingrad as part of the Case Blue campaign.
On April 5, 1942, Adolf Hitler issued Fuhrer Directive No. 41, formalizing the objectives of the Case Blue offensive. This directive marked a critical strategic decision to capture the city of Stalingrad and secure the Volga River corridor. The German Sixth Army was ordered to spearhead the assault under challenging winter and logistical conditions. Hitler's personal involvement underscored the importance he placed on this southern campaign. The directive also aimed to seize oil fields in the Caucasus to fuel the Reich's war machine. Historians consider this order a turning point, as the eventual Battle of Stalingrad became one of the war's bloodiest and most decisive engagements. The failure to anticipate Soviet resilience and supply issues ultimately led to disastrous losses for Germany. Fuhrer Directive No. 41 remains a key document in understanding the high command's strategic planning during World War II.
1942
World War II
Adolf Hitler
Case Blue
German Sixth Army
planned assault on Stalingrad
1942day.year
World War II: The Imperial Japanese Navy launches a carrier-based air attack on Colombo, Ceylon during the Indian Ocean raid. Port and civilian facilities are damaged and the Royal Navy cruisers HMS Cornwall and HMS Dorsetshire are sunk southwest of the island.
During the Indian Ocean raid, Japanese carrier aircraft strike Colombo, sinking HMS Cornwall and HMS Dorsetshire and damaging port facilities.
On April 5, 1942, the Imperial Japanese Navy launched a daring carrier-based air attack on Colombo in Ceylon as part of the wider Indian Ocean raid. The operation targeted British naval forces and port infrastructure to weaken the Royal Navy’s Eastern Fleet. Japanese dive bombers and torpedo planes inflicted significant damage on civilian and military installations. Two Royal Navy cruisers, HMS Cornwall and HMS Dorsetshire, were sunk during the raids, showcasing Japan’s naval striking power far from home waters. The assault forced the British to reconsider their defensive posture in the Indian Ocean region. Civilian areas sustained damage, impacting Ceylon’s colonial administration. This raid temporarily disrupted Allied shipping routes and illustrated Japan’s capacity for long-range naval-air operations. The events at Colombo remain a stark example of maritime warfare in World War II.
Imperial Japanese Navy
a carrier-based air attack on Colombo
Ceylon
Indian Ocean raid
Royal Navy
cruisers
HMS Cornwall
HMS Dorsetshire
1943day.year
World War II: United States Army Air Forces bomber aircraft accidentally cause more than 900 civilian deaths, including 209 children, and 1,300 wounded among the civilian population of the Belgian town of Mortsel. Their target was the Erla factory 1 kilometre (0.62 mi) from the residential area hit.
USAAF bombers mistakenly bombed Mortsel, Belgium, killing over 900 civilians in one of WWII’s deadliest accidental strikes.
On April 5, 1943, United States Army Air Forces bombers targeted the Erla aircraft factory near Mortsel, Belgium. Due to navigational errors and misidentification, bombs fell on the nearby residential district instead. The accidental strike resulted in more than 900 civilian deaths, including over 200 children, and injured around 1,300 others. Local emergency services were overwhelmed by the scale of destruction and the number of casualties. The tragedy sparked outcry over allied bombing accuracy and the protection of civilian populations. In the aftermath, military planners reviewed bombing procedures and intelligence methods. Memorials in Mortsel commemorate the victims and serve as reminders of wartime risks to non-combatants. The incident remains a poignant example of the horrors of urban warfare and the human cost of strategic bombing campaigns.
1943
United States Army Air Forces
Mortsel
1956day.year
Cuban Revolution: Fidel Castro declares himself at war with Cuban President Fulgencio Batista.
Fidel Castro proclaims war on President Batista, intensifying the Cuban Revolution.
On April 5, 1956, Fidel Castro publicly declared war against Cuban President Fulgencio Batista, marking a crucial escalation in the Cuban Revolution. This announcement followed months of guerrilla skirmishes and political organizing by Castro’s 26th of July Movement. Castro portrayed the conflict as a fight for social justice, national sovereignty, and economic reform against a corrupt dictatorship. His declaration energized supporters and drew increasing attention from international observers. The intensified conflict led to more aggressive military campaigns in the Sierra Maestra region. Batista’s regime responded with harsh repression, deepening the cycle of violence. This turning point set the stage for the revolution’s eventual success and the radical transformation of Cuba’s political landscape.
1956
Cuban Revolution
Fidel Castro
Cuban President
Fulgencio Batista
1966day.year
During the Buddhist Uprising, South Vietnamese Prime Minister Nguyễn Cao Kỳ personally attempts to lead the capture of the restive city of Đà Nẵng before backing down.
In 1966, during the Buddhist Uprising in South Vietnam, Prime Minister Nguyễn Cao Kỳ personally led an operation to seize Đà Nẵng before ultimately withdrawing.
Nguyễn Cao Kỳ, the charismatic Prime Minister of South Vietnam, personally led a military operation to retake the restive city of Đà Nẵng from Buddhist demonstrators.
The 1966 Buddhist Uprising had become a national crisis, with monks and civilians protesting against the military-dominated regime.
Kỳ's forces faced unexpected resistance as protestors fortified key positions throughout the city.
Amid fears of heavy casualties and growing public outrage, the prime minister decided to withdraw his troops.
The failed operation revealed fractures within the South Vietnamese government and highlighted the fragile state of its leadership.
1966
Buddhist Uprising
Nguyễn Cao Kỳ
Đà Nẵng
1971day.year
In Sri Lanka, Janatha Vimukthi Peramuna launches a revolt against the United Front government of Sirimavo Bandaranaike.
In 1971, the Marxist Janatha Vimukthi Peramuna initiated an armed uprising against Prime Minister Sirimavo Bandaranaike’s United Front government.
On April 5, 1971, the leftist Janatha Vimukthi Peramuna (JVP) initiated a nationwide uprising against Sri Lanka’s ruling United Front coalition.
Frustrated by unemployment and social inequalities, JVP members seized police stations and military outposts in rural areas.
Led by Rohana Wijeweera, the insurgents aimed to overthrow Prime Minister Sirimavo Bandaranaike’s administration.
Despite initial successes, the rebels were outmatched by government forces supplemented by foreign assistance.
Within weeks, the revolt was brutally suppressed, resulting in thousands of casualties and mass arrests.
The 1971 uprising left a lasting impact on Sri Lanka’s political landscape and security policies.
1971
Janatha Vimukthi Peramuna
a revolt
United Front
Sirimavo Bandaranaike