[citation needed] Rawson was born in Santiago del Estero in 1885 to a San Juan family of American origin.

The GOU, lacking the sufficient number of troops needed to successfully implement a coup, knew Rawson could provide the soldiers they required.

On June 4, Rawson and 10,000 troops under his command entered Buenos Aires and overthrew the government of Ramón Castillo.

Colonel Elbio Anaya appeared at his office and told him that he was ruling because of a misunderstanding, as the president was Ramírez.

[8] In 1945, Rawson was arrested and brought before a military tribunal for opposing the government of President Edelmiro Farrell, but he was quickly released.