Infantry Regiment "Asturias" No. 31
The Infantry Regiment "Asturias" No. 31 (Spanish: Regimiento de Infantería "Asturias" nº 31") is a mechanized infantry unit in the Spanish Army.
It is also known as El Cangrejo ("The Crab"), name which features on its regimental coat of arms, and which it was given following the 1793–1795 campaign in Roussillon, during which it never retreated.