Marmaduke Grove Vallejo (July 6, 1878 – May 15, 1954), was a Chilean Air Force officer, political figure and member of the Government Junta of the Socialist Republic of Chile in 1932.

That incident proved to be his turning point and from then on he declared his motto to be an “undying love for the underdogs and for true justice”.

On September 3, 1924, he had a notorious participation in the incident known as the "saber rattling", where 56 military officers protested against their low salaries.

President Arturo Alessandri, noticing that he had lost control over these officers, resigned and left the country on September 10.

On January 17, 1929, together with also exiled General Enrique Bravo and major Carlos Millán, they signed the “Calais pact" and swore to bring democracy back to Chile.

The plan failed and Grove, together with lieutenant Carlos Charlín Ojeda were arrested and deported to Easter Island.

The Socialist republic was headed by a Government Junta composed of General Arturo Puga, Carlos Dávila and Eugenio Matte.

In that short time, the Socialist republic only managed to approve a few social measures, such as the obligation of the Central Bank to grant credits to small mining and agricultural concerns and the return of the pawned articles at the government-owned pawnbroker to their owners.

He was only able to return from his exile on Easter Island two days before the election, but still managed to finish second, behind Arturo Alessandri, with a 17.7% of the vote.

On April 19, 1933, together with Oscar Schnake, Salvador Allende, and Carlos Alberto Martínez, Grove founded the Socialist Party of Chile.

He became General Secretary of that party in 1938 and president of the Popular Front coalition that won the presidential election that same year with the candidate Pedro Aguirre Cerda.