Following the conquest of Constantinople in 1453, the Ottoman Empire entered a long period of conquest and expansion.

Surely the Ottoman Empire entered the war by declaring war itself on Germany's enemies?

The Ottoman Empire entered World War I on the side of the Central Powers and was ultimately defeated.

The Ottoman Empire entered the war with an army of 255,000 men.

When the Ottoman Empire entered the war, they forced everyone who's age is between 18 and 60 to fight in the Turkish army.

The Ottoman Empire eventually entered the First World War on Germany's side.

Beginning by 1683, the Ottoman Empire entered a long and disastrous war called the Great Turkish War (1683-1699).

In the 15th and 16th centuries, the Ottoman Empire entered a period of expansion.

The Ottoman Empire enters the war allied with Germany.

War has been declared, although the Ottoman Empire has not yet entered.