Brazil deployed and fought in the second world war, your information is untrue, 100 thousand Brazilian troops fought in Italy against the Germans, the Mexican air force deployed 2 teams of combat planes to fight the Japanese in 1944 in Philippines. Not all the countries of Latin america were friends of the Americans or British; Argentina is an example because the government of Juan Domingo Pero was nationalist and fascist.
Latin America was also populated by large numbers of migrants from Japanese, German or Italian origins, for example millions of Brazilians, Uruguayans, Chileans are from these racial and cultural heritage. Also those nations have important capital and economical interests from those countries, millions of Europeans ( Spanish, Portuguese, English, french, polish, Russians, Lithuanian, Jews, Italians, Greeks ) and thousand of Arabs, Turkish , Chinese, Koreans and Japanese migrated to Argentina, Mexico, Brazil, Peru , Cuba , Uruguay, Costa Rica, Chile, Venezuela, Paraguay, Bolivia in the 19th and 20th centuries.
Latin america was like in the 16-18th centuries, a very important source of economical, natural , mineral , agricultural resources , important for the western economy and civilization and also for Japan and the axis powers. The civil war in Spain between fascists and leftist republicans had huge consequences in Latin america where politics and society was also divided between progressives and liberals and conservatives, rightist, fascists and clerical Catholics. Franco who won the Spanish civil war with the help of Mussolini and hitler had in the 1930s, 40s and 50s strong ties with the latinoamerican conservatives. Great Britain and France also had in those times strong presence in latinoamerica, strong presence in cultural, economical, social, political and philosophical areas, this presence is originated from the beginning of the colonization and exploration of the Americas by the Europeans in the 16 century.
The first colonies of Scotland or France were not in Asia, Africa or North America. The first settlement of Scottish people in the Americas was in the Darien area, very close to the Spanish settlement of Santa Maria del Darien, the first European settlement founded in the Americas. The French Huguenots or protestants of the 16th century founded colonies in Brazil very close to the Portuguese colonies of Brazil and the 2 European countries fought between them for the victory, France lost this world but France, Denmark, Netherlands and England had important colonies in Central-, South America and the Caribbean , very close to the Portuguese and the Spanish possessions of those empires in the new world and they have economical and cultural ties with them.
Great Britain in the 18 century made many tentative of invasion of the Spanish empire, the British lost the wars of invasion against the vice-royalties of New Granada (former Colombia, where they lost 20 thousand men, with participation of slaves and colonisrs of Virginia, Massachusetts and Jamaica, colonial militia and with the presence of the cousin of George Washington, under command of British admiral Vernon,) and the Rio de la Plata (former argentina and Uruguay, where the British troops under Beresford were defeated after capturing Buenos Aires and Montevideo by the Spaniards and Argentinians under command of the French trader Santiago Liniers). Also Britain helped in the independence wars of the criollos or white creoles (not confuse with the creoles black people, in rebellion against their Spanish fathers and brothers.
In the 19th century, 20 millions of Latino-Americans who fought in civil war against the Spanish colonization, 20 thousand British and Irish troops and many thousand of European Napoleonic wars veterans fought alongside the Latino-American Spanish whites creoles born in the Americas, against the Spaniards rulers and the Americans who were with them. Other whites criollos or creoles, blacks, mulattoes, indigenous and mestizos or mixed blood also divided and took different boundaries in those violent Latino-American or Hispano-American independence wars.
France also send a great expeditionary military force in the 1860s to Mexico with the purpose to establish and defend a conservative and catholic and Latin empire under the rule of Maximiliano of habsbourg against the Mexicans republicans liberals under the rule of Benito Juarez, a lawyer from indigenous race). A war that Suarez won with the help of the US and the people of Mexico.
Also the pirates of France and England attacked and robbed in the 16th and 17th century the Spanish and Portuguese possessions in central and south america and the Caribbean and the Pacific. In those centuries and the 18th century and the 19th century Spain also controlled areas of the actually usa, for example New Mexico, California, Texas, Florida , Colorado , Puerto Rico and also the Philippines, the Marianas, Guam and the Carolines in the pacific Ocean.
The presence and the close ties of German and Italian people in Latino-America also dates back from the 16 century when the Germans under the rule of the Welser and Fulgers bankers colonized and explored in the 16 century, Venezuela for the emperor of the Spanish empire, also emperor of the German-Roman catholic empre, Charles V of Habsbourg. The Italians and Germans and also the Japanese migrated by millions to Brazil, Uruguay, Chile , Mexico, Cuba like also did the Spanish, Portuguese, English, French and Dutch in the 16th-19th centuries. Not only to USA, Canada, South Africa or Australia. The Dutch or the Netherlands controlled in the 17th century the north east of Brazil and made many improvements in the culture and economics of these region.