The Wars of the Three Kingdoms, sometimes known as the British Civil Wars, formed an intertwined series of conflicts that took place in England, Ireland and Scotland between 1639 and 1651.

Only 20% of the males born in the Soviet Union in 1923 survived the war.

The Iranian Revolution refers to events involving the overthrow of the Pahlavi dynasty under Mohammad Reza Shah Pahlavi (who was supported by the United States) and its eventual replacement with an Islamic republic under the Grand Ayatollah Ruhollah Khomeini.

The Kargil War was an armed conflict between India and Pakistan that took place between May and July 1999 in the Kargil district of Kashmir and elsewhere along the Line of Control (LOC). The cause of the war was the infiltration of Pakistani soldiers and Kashmiri militants into positions on the Indian side of the LOC, which serves as the de facto border between the two states.

Abraham Lincoln refused to recognize the southern states as an independent nation and the Civil War erupted in the spring of 1861. He narrowly won re-election in 1864 against opponents who wanted to sign a peace treaty with the southern states.

German justifications for treating the Lusitania as a naval vessel centered on the fact that the ship was carrying hundreds of tons of war munitions, but the sinking caused a storm of protest in the United States as 128 American citizens were among the dead, and helped shift public opinion against Germany.

Confederate General Robert E. Lee was defeated by Union General George G. Meade in a three-day battle near Gettysburg, Pennsylvania that left nearly 52,000 men killed, wounded, or missing in action.

On November 16, 1776, Margaret Cochran Corbin was allowed to accompany her husband into battle as a nurse for injured soldiers. She was standing next to her husband when he fell during battle and took his post firing a cannon until she too was seriously wounded.

Zenobia became queen of the Palmyrene Empire following her husband's death in 267. By 269, Zenobia had expanded the empire, conquering Egypt and expelling the Roman prefect, Tenagino Probus, who was beheaded after he led an attempt to recapture the territory. She ruled over Egypt until 271, when she was defeated and taken as a hostage to Rome by Emperor Aurelian.

Mary Edwards Walker was captured by Confederate forces during the American Civil War after crossing enemy lines to treat wounded civilians. After the war, she was approved for the highest United States Armed Forces decoration for bravery, the Medal of Honor.