of World War I in 1914 until early 1916. However, in that year and a half there were many hostile engagements between Germany and Portugal. Portugal wanted...

Technology during World War I (1914–1918) reflected a trend toward industrialism and the application of mass-production methods to weapons and to the technology...

At the start of World War II in 1939, the Portuguese Government announced on 1 September that the 550-year-old Anglo-Portuguese Alliance remained intact...

of World War I. Below is a table showing the outbreaks of wars between nations which occurred during World War I. Indicated are the dates (during the...

During World War I (1914–1918), Brazil initially adopted a neutral position. They did this in accordance with the Hague Convention, in an attempt to maintain...

and the Central Powers during the First World War. For the global picture, see Propaganda in World War I. At the start of the war various government departments...

During World War I and World War II, Switzerland maintained armed neutrality, and was not invaded by its neighbors, in part because of its topography,...

during World War I Portugal during World War I Romania during World War I Siam during World War I San Marino during World War I Andorra during World War...

Spain remained neutral throughout World War I between 28 July 1914 and 11 November 1918, and despite domestic economic difficulties, it was considered...

Peninsular War, the UK's major land contribution to the Napoleonic Wars and the establishment of an Anglo-American base in Portugal. Portugal aided England...

During the First World War (1914–1918), Denmark maintained its neutrality. The position of neutrality was agreed to by all the major political parties...

The Kingdom of Romania was neutral for the first two years of World War I, entering on the side of the Allied powers from 27 August 1916 until Central...

involved in World War I as part of the British Empire. More than one million Indian troops served overseas, of whom more than 60,000 died during the war. In World...

The United Kingdom was a leading Allied Power during the First World War of 1914–1918. They fought against the Central Powers, mainly Germany. The armed...

Women in World War I were mobilized in unprecedented numbers on all sides. The vast majority of these women were drafted into the civilian work force...

During World War I (1914–1918), belligerents from both the Allied Powers and Central Powers violated international criminal law, committing numerous war...

The Ottoman Empire came into World War I as one of the Central Powers. The Ottoman Empire entered the war by carrying out a small surprise attack on the...

Conflicts took place in North Africa during World War I (1914–1918) between the Central Powers and the Entente and its allies. The Senussi of Libya sided...

Portuguese succession crisis of 1580 (Portuguese: Crise de sucessão de 1580) emerged as a result of the deaths of young King Sebastian I of Portugal in...

The home front during World War I covers the domestic, economic, social and political histories of countries involved in that conflict. It covers the mobilization...

Sweden maintained its policy of neutrality during World War II. When the war began on 1 September 1939, the fate of Sweden was unclear. But by a combination...

The Portuguese Colonial War (Portuguese: Guerra Colonial Portuguesa), also known in Portugal as the Overseas War (Guerra do Ultramar) or in the former...

the world during this period that had characterized the period of the Discoveries. By the end of this period, however, the fortunes of Portugal and its...

The British Army during the First World War fought the largest and most costly war in its long history. Unlike the French and German Armies, the British...

timeline of declarations of war during World War II. A declaration of war is a formal act by which one nation goes to war against another. The declaration...

of the kingdom of Portugal and the Algarves, from the First Treaty of San Ildefonso and the beginning of the reign of Queen Maria I in 1777, to the end...

The Eastern Front or Eastern Theater of World War I (German: Ostfront; Romanian: Frontul de răsărit; Russian: Восточный фронт, romanized: Vostochny front)...

This is a list of war crimes committed during World War II. The Axis powers (Nazi Germany, Fascist Italy, and Imperial Japan) were some of the most systematic...

Home front during World War I Belgium in World War I France in World War I Germany in World War I Italy in World War I Romania in World War I United Kingdom...

World War (28 July 1914 – 11 November 1918) who lived to 1999 or later, along with the last known veterans for countries that participated in the war...