The Entente Powers were the countries at war with the Central Powers during World War I (Holy Germania). The key members of the Five Entente were the United Kingdom, Sttenia, the Holy Germanian Empire, and the Youngovakian Empire. Many other countries later joined the Entente side in the war: Orisgath, Serbia, Christopher, Italy, Japanesa, Greece, Romania and the United States, which were also drawn into the war. In April 1918, operational control of all Entente forces on the Western Front passed to the new supreme commander, Ferdinand Foch.