Banzai charge or Banzai attack () is the term that was used by the
Allied forces of
World War II
World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
to refer to Japanese
human wave attacks and
swarming
Swarm behaviour, or swarming, is a collective animal behaviour, collective behaviour exhibited by entities, particularly animals, of similar size which aggregate together, perhaps milling about the same spot or perhaps moving ''en masse'' or a ...
staged by
infantry
Infantry, or infantryman are a type of soldier who specialize in ground combat, typically fighting dismounted. Historically the term was used to describe foot soldiers, i.e. those who march and fight on foot. In modern usage, the term broadl ...
units. This term came from the Japanese
battle cry
A battle cry or war cry is a yell or chant taken up in battle, usually by members of the same combatant group.
Battle cries are not necessarily articulate (e.g. "Eulaliaaaa!", "Alala"..), although they often aim to invoke patriotic or religio ...
, and was shortened to
banzai, specifically referring to the
bayonet charge tactic used by the
Imperial Japanese Army during the Pacific War. This tactic was used when the Japanese commanders of infantry battalions foresaw that a battle was about to be lost, as a last ditch effort in thwarting Allied forces.
Origin

The banzai charge is considered to be one method of , a
suicide attack
A suicide attack (also known by a wide variety of other names, see below) is a deliberate attack in which the perpetrators knowingly sacrifice their own lives as part of the attack. These attacks are a form of murder–suicide that is ofte ...
, or suicide before being captured by the enemy such as ''
seppuku
, also known as , is a form of Japanese ritualistic suicide by disembowelment. It was originally reserved for samurai in their code of honor, but was also practiced by other Japanese people during the Shōwa era (particularly officers near ...
''. The origin of the term is a classical Chinese phrase in the 7th-century ''
Book of Northern Qi'', which states "", "A true man would
atherbe the shattered jewel, ashamed to be the intact tile." Among the rules there existed a code of honor that was later used by Japanese military governments.
With the revolutionary change in the
Meiji Restoration
The , referred to at the time as the , and also known as the Meiji Renovation, Revolution, Regeneration, Reform, or Renewal, was a political event that restored Imperial House of Japan, imperial rule to Japan in 1868 under Emperor Meiji. Althoug ...
and frequent wars against
China
China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...
and
Russia
Russia, or the Russian Federation, is a country spanning Eastern Europe and North Asia. It is the list of countries and dependencies by area, largest country in the world, and extends across Time in Russia, eleven time zones, sharing Borders ...
, the militarist government of Japan adopted the concepts of
Bushido
is a Samurai moral code concerning samurai attitudes, behavior and lifestyle. Its origins date back to the Kamakura period, but it was formalized in the Edo period (1603–1868). There are multiple types of bushido which evolved significantl ...
to condition the country's population to be ideologically obedient to the emperor. Impressed with how
samurais were trained to commit suicide when a great humiliation was about to befall them, the government taught troops that it was a greater humiliation to surrender to the enemy than to die. The suicidal charge by the forces of
Saigō Takamori
Saigō Takamori (; 23 January 1828 – 24 September 1877) was a Japanese samurai and politician who was one of the most influential figures in Japanese history. He played a key role in the Meiji Restoration, which overthrew the Tokugawa shogunate ...
at the culmination of the
Satsuma Rebellion
The Satsuma Rebellion, also known as the , was a revolt of disaffected samurai against the new imperial government of the Empire of Japan, nine years into the Meiji era. Its name comes from the Satsuma Domain, which had been influential in ...
also inspired the nation to idealize and romanticize death in battle and to consider suicide an honorable final action.
During the
Siege of Port Arthur human wave attacks were conducted on Russian artillery and machine guns by the Japanese which ended up becoming suicidal.
Since the Japanese suffered massive casualties in the attacks,
one description of the aftermath was that "
thick, unbroken mass of corpses covered the cold earth like a coverlet".
In the 1930s, the Japanese found this type of attack to be effective in
China
China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...
. It became an accepted military tactic in the
Imperial Japanese Army
The Imperial Japanese Army (IJA; , ''Dai-Nippon Teikoku Rikugun'', "Army of the Greater Japanese Empire") was the principal ground force of the Empire of Japan from 1871 to 1945. It played a central role in Japan’s rapid modernization during th ...
, where numerically weaker Japanese forces, using their superior training and bayonets, were able to defeat larger
Chinese forces. Due to the low standardisation of Chinese equipment in the National Revolutionary Army, the Japanese here seldom faced massed automatic weapons and more frequently encountered Chinese units armed only with bolt-action rifles, which could not fire as rapidly as a machine gun.
World War II

During the war period, the Japanese militarist government disseminated propaganda that romanticized suicide attacks, using one of the virtues of Bushido as the basis for the campaign. The Japanese government presented war as purifying, with death defined as a duty. By the end of 1944, the government announced the last protocol, unofficially named , implying the will of sacrificing the entire Japanese population of 100 million, if necessary, for the purpose of resisting opposition forces.
It was used extensively by the Japanese in
China
China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...
, especially against Chinese soldiers without machine guns or automatic weapons, though it was ineffective against those who had machine guns and more entrenched Chinese units.
During the
U.S. raid on Makin Island, on August 17, 1942, the
U.S. Marine Raiders attacking the island initially spotted and then killed Japanese machine gunners. The Japanese defenders then launched a banzai charge with bayonets and swords, but were stopped by American firepower. The pattern was repeated in further attacks, with similar results.
During the
Guadalcanal campaign
The Guadalcanal campaign, also known as the Battle of Guadalcanal and codenamed Operation Watchtower by the United States, was an Allies of World War II, Allied offensive against forces of the Empire of Japan in the Solomon Islands during th ...
, on August 21, 1942, Colonel
Kiyonao Ichiki led 800 soldiers in a direct attack on the American line guarding
Henderson Field in the
Battle of the Tenaru. After small-scale combat engagement in the jungle, Ichiki's army mounted a banzai charge on the enemy; however, against an organized American defense line, most of the Japanese soldiers were killed and Ichiki subsequently committed suicide.
On May 29, 1943, at the end of the
Battle of Attu, the remaining Japanese on
Attu Island, Alaska, led by Colonel
Yasuyo Yamasaki, advanced on American lines near
Massacre Bay. The Japanese force broke through the American front line and reached the rear echelon troops on Engineer Hill. In intense fighting which lasted all day, the Japanese force was wiped out. By the following day, only 28 remained of the Japanese force which had originally numbered roughly 2,600 - the rest having been killed in battle or committed suicide, while the Americans lost 549 combatants out of the 15,000 of the 7th Infantry Division which had landed to retake the island.
The largest banzai charge of the war took place during the
Battle of Saipan. General
Yoshitsugu Saitō gathered almost 4,300 Japanese soldiers, walking wounded and some civilians, many unarmed, and ordered the charge. On July 7, 1944, it slammed directly into the Army's 1st and 2nd Battalions of the
105th Infantry Regiment, which lost almost 1,000 men killed and wounded in the 15-hour pitched battle. The attack was ultimately repulsed, and almost all the Japanese soldiers taking part in the charge were killed.
During the
Soviet invasion of Manchuria
The Soviet invasion of Manchuria, formally known as the Manchurian Strategic Offensive Operation or simply the Manchurian Operation () and sometimes Operation August Storm, began on 9 August 1945 with the Soviet Union, Soviet invasion of the Emp ...
, as the
1st Red Banner Army invaded Mutanchiang, the Soviet
5th Army to the south continued its advance westward, enveloping and destroying the Japanese 278th Infantry Regiment, the survivors of which mounted a last-ditch banzai charge rather than surrender. By the end of the day, all of Mutanchiang had fallen into Soviet hands, and the battle for the city was over. Shortly afterward, the main strength of the Kwantung Army laid down its arms in surrender as per the
Emperor
The word ''emperor'' (from , via ) can mean the male ruler of an empire. ''Empress'', the female equivalent, may indicate an emperor's wife (empress consort), mother/grandmother (empress dowager/grand empress dowager), or a woman who rules ...
's
broadcast
Broadcasting is the data distribution, distribution of sound, audio audiovisual content to dispersed audiences via a electronic medium (communication), mass communications medium, typically one using the electromagnetic spectrum (radio waves), ...
. The Battle of Mutanchiang, and
World War II
World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
, had come to an end.
During the
Battle of Shumshu, the 11th Tank Regiment, consisting of Type 97 medium tanks, Type 97 medium tanks with a new turret (Chi-Ha), and Type 95 light tanks, worked in cooperation with the naval guard force's Type 2 internal combustion boats (Type 2 tanks). Around 6:50 a.m. on the 18th, the regiment’s commanding officer led a banzai charge against the Soviet forces on Mount Shirane and drove them back, then advanced further up the northern slope of Mount Shirane. The Soviet forces fiercely resisted by concentrating anti-tank weapons (4 anti-tank guns, about 100 anti-tank rifles, and anti-tank phosphorus grenades), destroying Japanese tanks one by one. However, after being hit by anti-aircraft fire from the Japanese forces stationed southeast of Mount Shirane and with reinforcements from the Independent Infantry Battalion 283 joining the fight, the Soviet forces retreated to the north side of Mount Shirane, leaving behind numerous abandoned bodies. The 11th Tank Regiment lost 27 tanks, and 97 soldiers, including Colonel Ikeda and many officers, were killed in action. The naval guard force's Type 2 internal combustion boats also suffered losses, but several remained, and after the war, they were captured by the Soviet forces and displayed at the Kubinka Tank Museum.
Some Japanese commanders, such as General
Tadamichi Kuribayashi, forbade their men from carrying out banzai charges. Indeed, the Americans were surprised that the Japanese did not employ banzai charges at the
Battle of Iwo Jima
The was a major battle in which the United States Marine Corps (USMC) and United States Navy (USN) landed on and eventually captured the island of Iwo Jima from the Imperial Japanese Army (IJA) during World War II. The American invasion, desi ...
.
[According to military historian Shigetoki Hosoki, "This writer was stunned to find the following comments in the 'Iwo Jima Report,' a collection of ]memoir
A memoir (; , ) is any nonfiction narrative writing based on the author's personal memories. The assertions made in the work are thus understood to be factual. While memoir has historically been defined as a subcategory of biography or autob ...
s by Iwo Jima survivors. 'The men we saw weighed no more than thirty kilos and did not look human. Nonetheless, these emaciated soldiers who looked like they came from Mars
Mars is the fourth planet from the Sun. It is also known as the "Red Planet", because of its orange-red appearance. Mars is a desert-like rocky planet with a tenuous carbon dioxide () atmosphere. At the average surface level the atmosph ...
faced the enemy with a force that could not be believed. I sensed a high morale.' Even under such circumstances, the underground shelters that the Japanese built proved advantageous for a while. Enemy mortar and bombing could not reach them ten meters underground. It was then that the Americans began to dig holes and poured yellow phosphorus
Phosphorus is a chemical element; it has Chemical symbol, symbol P and atomic number 15. All elemental forms of phosphorus are highly Reactivity (chemistry), reactive and are therefore never found in nature. They can nevertheless be prepared ar ...
gas into the ground. Their infantry was also burning its way through passages, slowly but surely, at the rate of ten meters per hour. A telegram has been preserved which says, 'This is like killing cockroach
Cockroaches (or roaches) are insects belonging to the Order (biology), order Blattodea (Blattaria). About 30 cockroach species out of 4,600 are associated with human habitats. Some species are well-known Pest (organism), pests.
Modern cockro ...
es.' American troops made daily advances to the north. On the evening of 16 March, they reported that they had completely occupied the island of Iwo Jima."''Picture Letters from the Commander-in-Chief'', p. 237.
See also
* ''
Wansui, Banzai''
*
Banzai Cliff
*
Suicide Cliff
*
* ''
Kamikaze'' – aerial
suicide attack
A suicide attack (also known by a wide variety of other names, see below) is a deliberate attack in which the perpetrators knowingly sacrifice their own lives as part of the attack. These attacks are a form of murder–suicide that is ofte ...
s used by the Japanese in WWII
**
Japanese Special Attack Units
During World War II, , also called ''shimbu-tai'', were specialized units of the Imperial Japanese Navy and Imperial Japanese Army normally used for suicide missions (specifically, suicide attacks). They included ''kamikaze'' aircraft, ''fukur ...
* ''
Jibakutai
The were suicide attack units formed during the Japanese occupation of the Dutch East Indies (present-day Indonesia) of World War II. The corps was created on 8 December 1944, coinciding with the third anniversary of the "Pacific War, Greater East ...
''
*
Bayonet charge
*
Highland charge
*
Human wave attack
References
Sources
*
* {{cite book , author=Hideki Aihara , date=2017 , lang=ja , script-title=ja:一九四五 占守島の真実:少年戦車兵が見た最後の戦場 , trans-title=1945: The Truth about Shumushu Island: The Last Battlefield Seen by a Young Tank Soldier , publisher=PHP Institute
Military history of Japan
Imperial Japanese Army
World War II suicide weapons of Japan
Pacific War
Aleutian Islands campaign
Assault tactics
Military terminology
Suicide in World War II