Boixcar / Guillermo Sánchez Boix (1917 - 1960)

"Boixcar (pen name of Guillermo Sánchez Boix; 1917, Barcelona—1960) was a Catalan-Spanish cartoonist.
He began his career in the mid-1940s. His first comics include El Caballero Negro ("The Black Knight", 1945), El Puma (1946), and La Vuelta al Mundo de dos Muchachos ("The Two Boys' Return to the World", 1948).
He gained popularity with his comic book Hazañas Bélicas ("War Deeds", first issue in 1948, second one in 1950). It drew inspiration from the recent events of World War II (and later of the Korean War), with an accent placed on human values expressed in the most desperate situations, the sentimentalism of the action being in contrast with the spectacularly realistic depiction of weapons and vehicles. The Hazañas' success made the editor issue another in the series, as Hazañas Bélicas Extra, increased in content that due to Boixcar's collaboration with several other artists on the project." - quote source

See more amazing artworks by Boxicar at El Desvan del Abuelito's first and second articles on the artist.
Additional artworks by Boxicar in this article at Autores De Tebeos.

Similar Spanish pulp illustrations by Mathias Alonso can be viewed here.