[2] Advancing in rank as a specialist in cavalry tactics, he assisted fellow General José Félix Uriburu in an authoritarian coup that deposed Hipólito Yrigoyen in 1930.

[citation needed] When Uriburu set free elections and then died, General Ramírez worked behind the scenes to plan a return of fascism to Argentina.

In 1942, Ramírez was appointed War Minister by President Ramón Castillo, and began to reorganize the Argentine Army.

Two weeks later, on 4 June 1943, Ramírez assisted Arturo Rawson in overthrowing Castillo's government, and was again made Minister of War.

Three days later, on 7 June Ramírez forced Rawson's resignation and maintained Argentina's neutrality during World War II.