The World War II Victory Medal was established by an Act of Congress on 6 July 1945 (Public Law 135, 79th Congress) and promulgated by Section V, War Department Bulletin 12, 1945. The medal was designed by Mr. Thomas H. Jones and approved by the Secretary of War on 5 February 1946.
World War I (WWI or WW1), also called the First World War, began on July 28, 1914 and lasted until November 11, 1918. The war was a global war that lasted exactly 4 years, 3 months and 14 days. Most of the fighting was in Europe , but soldiers from many other countries took part, and it changed the colonial empires of the European powers.
The World War I Victory Medal (originally known as the Victory Medal) was a United States World War I service medal designed by James Earle Fraser.  Award of a common allied service medal was recommended by an inter-allied committee in March 1919. 
Brazil was one of the Allies of World War II.It was also the only Ally from South America to provide troops.The country made significant contributions to the war effort. They sent an expeditionary force to fight alongside the allies in the Italian Campaign.