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April 22 in Military History

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This Day in Military History: April 22

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The chlorine gas cloud rolling across the trenches near Ypres, April 22, 1915
Defining Moment111 years ago

First Poison Gas Attack at Ypres

Army· 1915

German forces released 168 tons of chlorine gas from 5,730 cylinders along a four-mile front near Ypres, Belgium. The yellowish-green cloud killed thousands of French and Algerian troops and opened a four-mile gap in the Allied line. Only the Canadian 1st Division's desperate stand prevented a complete breakthrough.

10 events, 2 notable births, 2 notable deaths, and 5 military quotes10events2births2deaths5quotes

1800s

1864Civil WarArmy162 years ago

Congress passed the Coinage Act authorizing the motto "In God We Trust" on US coinage, first appearing on the 1864 two-cent piece. The wartime measure reflected the religious tenor of Union sentiment during the Civil War.

1900s

1915WWIArmy111 years agoDefining Moment

German forces released 168 tons of chlorine gas near Ypres, Belgium, in the first large-scale chemical weapons attack in modern warfare. The gas killed thousands and opened a four-mile gap in the Allied line.

1918WWINavyMarines108 years ago

The Royal Navy launched a daring night assault on the Belgian port of Zeebrugge, attempting to block the German U-boat base by sinking obsolete cruisers in the canal mouth. Eight Victoria Crosses were awarded for the costly attack.

1944WWIIArmyNavy82 years ago

80,000 US troops under General MacArthur landed at Hollandia and Aitape on the northern coast of Dutch New Guinea, leapfrogging 40,000 Japanese troops at Wewak. The surprise 580-mile jump was one of the boldest moves in the Pacific War.

1951KoreaArmy75 years ago75th Anniversary

The 2nd Battalion, Princess Patricia's Canadian Light Infantry, and the 3rd Battalion, Royal Australian Regiment, held a critical position against massive Chinese forces during the Chinese Spring Offensive. Both battalions received the US Presidential Unit Citation.

1951KoreaArmy75 years ago75th Anniversary

Chinese People's Volunteer Army 63rd Army began the Fifth Phase Offensive by attacking the British 29th Brigade along the Imjin River. The Gloucestershire Regiment's stand at Gloster Hill earned a US Presidential Unit Citation.

1970VietnamArmyAir Force56 years ago

The first Earth Day drew 20 million Americans to rallies as the Vietnam War consumed billions in defense spending. Military scientists faced rising scrutiny over Agent Orange and dioxin contamination in Southeast Asia.

1993ModernNavy33 years ago

USS Theodore Roosevelt (CVN-71) began Operation Deny Flight, enforcing the UN no-fly zone over Bosnia-Herzegovina from the Adriatic Sea. The carrier's F-14 Tomcats and F/A-18 Hornets flew the first NATO combat air patrols over former Yugoslavia.

2000s

2000ModernCoast Guard26 years ago

Armed US Border Patrol and INS Special Response Team agents raided the Miami home where Cuban boy Elian Gonzalez was staying, using flash-bang grenades to seize him. The pre-dawn operation ended a months-long custody standoff.

2004ModernArmy22 years ago

Former NFL star and US Army Ranger Corporal Pat Tillman was killed by friendly fire in Afghanistan. Initially reported as killed by enemy fire, the subsequent coverup and investigation became one of the most controversial incidents of the War on Terror.

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Born on This Day

J. Robert Oppenheimer

J. Robert Oppenheimer

Scientific Director, Manhattan Project

b. 1904
Army

Scientific director of the Manhattan Project who led the development of the atomic bomb at Los Alamos. His work produced the weapons that ended World War II. He later opposed the hydrogen bomb and had his security clearance revoked.

Eddie Albert

Eddie Albert

Lieutenant

b. 1906
Navy

Actor who served as a Navy lieutenant in WWII, earning a Bronze Star for rescuing Marines under heavy Japanese fire during the Battle of Tarawa in November 1943.

Died on This Day

Pat Tillman

Pat Tillman

Corporal

d. 2004
Army

Former NFL safety for the Arizona Cardinals who enlisted in the Army Rangers after 9/11. Killed by friendly fire in Afghanistan, his death and the military's initial cover-up became one of the most controversial incidents of the War on Terror.

Richard Howe, 1st Earl Howe

Richard Howe, 1st Earl Howe

Admiral of the Fleet

d. 1799
Navy

British naval commander who led the Royal Navy during the American Revolution and won the decisive Glorious First of June victory in 1794. His tactical innovations influenced naval warfare for decades.

Military Quotes

Gas! GAS! Quick, boys!, An ecstasy of fumbling, fitting the clumsy helmets just in time.

Wilfred Owen

Lieutenant, Manchester Regiment

From "Dulce et Decorum Est," written about gas attacks at Ypres

Now I am become Death, the destroyer of worlds.

J. Robert Oppenheimer

Scientific Director, Manhattan Project

After witnessing the first nuclear test at Trinity, 1945

We shall defend our island, whatever the cost may be. We shall fight on the beaches, we shall fight on the landing grounds, we shall fight in the fields and in the streets.

Winston Churchill

Prime Minister of the United Kingdom

Speech to Parliament after Dunkirk, 1940

In war, whichever side may call itself the victor, there are no winners, but all are losers.

Neville Chamberlain

Prime Minister of the United Kingdom

1938

Somewhere inside, we hear a voice. It leads us in the direction of the person we wish to become. But it is up to us whether or not to follow.

Pat Tillman

Corporal, US Army Rangers

From his personal journal

Frequently Asked Questions

What military events happened on April 22?

10 military events occurred on April 22, spanning multiple centuries. Key events include: First Poison Gas Attack at Ypres (1915), Allied Landings at Hollandia, New Guinea (1944), Battle of Kapyong, Korea (1951), Battle of the Imjin River Begins (1951).

What is the most significant military event on April 22?

The most significant military event on April 22 is First Poison Gas Attack at Ypres (1915). German forces released 168 tons of chlorine gas from 5,730 cylinders along a four-mile front near Ypres, Belgium. The yellowish-green cloud killed thousands of French and Algerian troops and opened a four-mile gap in the Allied line. Only the Canadian 1st Division's desperate stand prevented a complete breakthrough.

What famous military figures were born on April 22?

Notable military figures born on April 22 include J. Robert Oppenheimer (1904–1967), Eddie Albert (1906–2005).

What wars are represented in April 22's military timeline?

Events on April 22 span World War I, World War II, the Korean War, the Modern Era, the Civil War, the Vietnam War, covering 10 events across 3 centuries of military history.

How many military branches are represented on April 22?

Events on April 22 involve 5 branches of the U.S. and allied armed forces, reflecting the global scope of military operations throughout history.

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