World War I casualties
The total number of deaths includes from 9 to 11 million military personnel. The civilian death toll was about 8 million, including about 6 million due to war-related famine and disease. The Triple Entente (also known as the Allies) lost about 6 million military personnel while the Central Powers lost about 4 million. At least 2 million died from diseases and 6 million went missing, presumed dead. This article lists the casualties of the belligerent powers based on official published sources.
Portugal during World War I
Approximately 12,000 Portuguese troops died during the course of World War I, including Africans who served in its armed forces in the colonial front. Civilian deaths in Portugal exceeded 220,000: 82,000 caused by food shortages and 138,000 by the Spanish flu.
When Portugal complies with the British request to confiscate the German ships interned in Portuguese ports, Germany reacts by declaring war on Portugal, thus forcing the Portuguese officially into the war.The war causes Portugal 8,145 dead, 13,751 wounded and 12,318 prisoners or missing. At sea, 96 Portuguese ships are sunk (100,193 tons) and 5 Portuguese ships damaged (7,485 tons) by German submarines.