A formal military alliance is not required for being perceived as an ally—co-belligerence, fighting alongside someone, is enough.

According to this usage, allies become so not when concluding an alliance treaty but when struck by war.

Portugal aided England (and later the UK) in times of need, for example, in the First World War.

When spelled with a capital "A","Allies" usually denotes the countries who fought together against the Central Powers in World War I (the Allies of World War I), or those who fought against the Axis Powers in World War II (the Allies of World War II).

The term has also been used by the United States Army to describe the countries that gave assistance to the South Vietnamese during the Vietnam War.

"Allies", "Allied Forces", "Allied Powers", and "Allied" redirect here.

For other uses, see Allies (disambiguation), Allied Forces (disambiguation), Allied Powers (disambiguation), and Allied (disambiguation).

An alliance is a relationship among people, groups, or states that have joined together for mutual benefit or to achieve some common purpose, whether or not explicit agreement has been worked out among them. Alliances form in many settings, including political alliances, military alliances, and business alliances.

When the term is used in the context of war or armed struggle, such associations may also be called allied powers, especially when discussing World War I or World War II.This alliance, which goes back to the Middle Ages, has served both countries.It was very important throughout history, influencing the participation of the United Kingdom in the Iberian Peninsular War, the UK's major land contribution to the Napoleonic Wars and the establishment of an Anglo-American base in Portugal.There are several located on the front page, and the others can be accessed through the Photo Galleries tab.We are so excited to have all of you at Alliance Leadership Middle Academy for our first year.If you have questions regarding our lunch program, please call the Main Office.