WarIs not an action done by a human

Before the dawn of history war likely consisted of small-scale raiding. One half of the people

found in a Nubian cemetery dating to as early as 12,000

years ago had died of violence.

Since the rise of the state some 5,000 years ago, military activity has occurred over much of the

globe. The advent of gunpowder and the acceleration of

technological advances led to modern warfare.

It is forbidden to kill; therefore all murderers are punished unless they kill in large numbers and to

the sound of trumpets.  -Voltaire, Wa

In War Before Civilization, Lawrence H. Keeley, a

professor at the University of Illinois, says that

approximately 90–95% of known societies throughout history engaged in at least

occasional warfare, and many fought constantly.

Despite the undeniable carnage and effectiveness of modern warfare, the evidence shows that tribal warfare is

on average 20 times more deadly than 20th century warfare. At one

battle lost in 1857 among the Mohave-Yumas, 49.6% of combatants were killed; in a

great Aztec battle fought in 1478, 87.1% of 24,000 combatants were

killed, while 100% of combatants were killed during the Blackfoot Indian raid which annihilated the Assiniboins in

1849.

The direct use of force is such a poor solution to any problem, it is generally employed only by small

children and large nations.  -David Friedman

To start with List of wars by death toll

These figures include deaths of civilians from diseases, famine, atrocities etc. as well as deaths of soldiers in battle.

This is an incomplete list of wars:-30,000,000–60,000,000 - Mongol Conquests- 25,000,000 - Qing dynasty conquest

of Ming dynasty-20,000,000 - World War I (1914–1918) -60,000,000–72,000,000 World War II(1939–

1945)

War does not determine who is right - only who is left. 

- Bertrand Russell

-10,000,000 - Warring States Era (China, 475 BC–221 BC)

-5,000,000–9,000,000 - Russian Civil War and Foreign Intervention (1917–1921)

-1,000,000 - Iran–Iraq War (1980–1988)

-900,000–1,000,000 - Mozambique Civil War (1976–1993)

-500,000 - 1,000,000 - Spanish Civil War (1936–1939)

“I am prepared to die, but there is no cause for which I am prepared to kill.”

- Mahatma Gandhi 

-1,500,000–2,000,000 - Afghan Civil War (1979)

-2,300,000–3,800,000 - Vietnam War (entire war 1945–1975)

-3,500,000–6,000,000 - Napoleonic Wars (1804–1815)

- 5,000,000–9,000,000 - Russian Civil War and Foreign Intervention (1917–1921 )

-1,750,000–2,100,000 - American phase(1960–1973 )

“If war is ever lawful, then peace is sometimes

sinful”

 C.S. Lewis

War makes thieves and peace hangs them. 

-George Herbert

The financial cost of the World War II is estimated at about a $1.944 trillion U.S. dollars

worldwide, making it the most costly war in capital as well as lives.

Property damage in the Soviet Union inflicted by the Axis invasion was estimated to a value of

679 billion rubles. The combined damage consisted of complete or partial destruction of

1,710 cities and towns, 70,000 villages/hamlets, 2,508 church buildings, 31,850 industrial

establishments, 40,000 miles of railroad, 4100 railroad stations, 40,000 hospitals, 84,000

schools, and 43,000 public libraries

“Give me the money that has been spent in war and I will clothe every man, woman, and child in an attire of

which kings and queens will be proud.  I will build a schoolhouse in every valley over the whole earth.  I will crown every hillside with a place of worship consecrated

to peace.” 

-Charles Sumner

Many wars have been accompanied by significant depopulations. During

the Thirty Years' War in Europe, for example, the population of

the German states was reduced by about 30%.The Swedish armies alone

may have destroyed up to 2,000 castles, 18,000 villages and 1,500 towns in Germany, one-third of all

German towns.

Only the dead have seen the end of war. 

-Plato