[1] The custom was to name Brigades on formation after inspirational "heroes of the Left".

The 13th Brigade was named after Jarosław Dąbrowski, a Polish general who died on foreign soil, fighting in the defence of the Paris Commune in 1871.

It was dissolved on 23 September 1938, along with the other International Brigades, when the Negrin Government decided to send foreign volunteers home.

This decision was taken after pressure from the Non-Intervention Committee to remove all foreign volunteers from both sides of the conflict in an endeavour to de-internationalise it.

The brigade was again reformed (in Monredón) on 1 October 1938 from exclusively Spanish conscript battalions.