Argentine Patriotic League
The Argentine Patriotic League (Spanish: Liga Patriótica Argentina) was an Argentinian nationalist organization that existed when 1919 and 1931, when it merged into the Argentine Civic Legion.
At its height in the early 1920s, the League's "brigades" contained as many as 300,000 members throughout the country.
It was one part of a larger movement of patriotic leagues active in Chile and Argentina during the early 20th century.
Leftist Wikipedia makes various allegations regarding the organization, often lacking even a dubious source.
