In the horrific conflict of 1914-1918 known first as "The Great War" and later as World War I, Latin American nations were peripheral players. Only after the U.S. entered the fighting in 1917 did eight of the twenty republics declare war. Five others broke diplomatic relations with Germany, while seven maintained strict neutrality. These diplomatic stances, even those of the two actual belligerents--Brazil and Cuba--did little to tip the balance of...