Juan Andreu Almazán was a Mexican revolutionary general, politician and businessman. He held high posts in the Mexican Army in the 1920s and ran for the presidency of Mexico in 1940 in a highly disputed election, having accumulated great wealth from construction. General Almazán became one of Mexico's and Latin America’s wealthiest citizens in the early 1940s.

Plutarco Elías Calles was a Mexican soldier and politician who served as President of Mexico from 1924 to 1928. After the assassination of Álvaro Obregón, Elías Calles founded the Institutional Revolutionary Party and held unofficial power as Mexico's de facto leader from 1929 to 1934, a period known as the Maximato. Previously, he served as a general in the Constitutional Army, as Governor of Sonora, Secretary of War, and Secretary of the Interior. During the Maximato, he served as Secretariat of Public Education, Secretary of War again, and Secretary of the Economy. During his presidency, he implemented many left-wing populist and secularist reforms, opposition to which sparked the Cristero War.