[2] When the school where she worked closed because of the Spanish Civil War, she moved to England to complete her education, but she returned to Barcelona in August 1938 to participate in the Swiss Aid Committee for the Children of Spain as a volunteer for the organization Service Civil International (SCI), an entity that led the Swiss Aid Committee for the Children.

In Barcelona, Ruth von Wild, together with Quakers, provided logistical and material support to other local entities, such as the Ajut Infantil de Reraguarda, which organized camps to take in refugee children.

[3] She also sent donations from the Swiss population to different shelters and canteens in Catalonia, with the help of fellow volunteers Rüdi Grubenmann and Hans Zeier, who led the convoys.

[2] Between the end of January and the beginning of February 1939, the members of the committee left Barcelona together with the civilian population fleeing to France.

It was for children affected by World War II, mostly French, but there were also other nationalities, some of them Jews, who survived Nazi persecution, such as Margot Wicki-Schwarzschild, born in 1931.