Infantry Regiment "Asturias" No. 31

The coat of arms of the 31st Mechanized Infantry Regiment "Asturias".

The 31st Mechanized Infantry Regiment "Asturias" (Spanish: Regimiento de Infantería Mecanizada "Asturias" nº 31) is a mechanized infantry unit in the Spanish Army. It was created in the autonomous region of Asturias on July 6, 1703. Its first commander was Álvaro Navia Osorio y Vigil, Viscount of Puerto de Vega and Marquis de Santa Cruz de Marcenado. The regiment initially consisted of 600 men. It was also known as El Cangrejo ("The Crab"), a name which it obtained following the campaign in Roussillon from 1793 to 1795, during which it never retreated. The patron saint of the regiment was Our Lady of Covadonga.