On 15 November the Second Mixed Brigade set out by railway towards Madrid. It arrived at Huerta in two separate groups and continued on foot until reaching the area between Ocaña and Noblejas onward to the first line of fire. On 17 November it was sent by General Miaja as a reserve unit at the front of the Ciudad Universitaria where it had to face the feared "Regulares" African troops. Made up of a machine-gun company and three infantry companies, the 2 mixed brigade covered repeatedly the vanguard of the sector between the southern wall of the Casa de Campo and the Puerta del Ángel. In the Ciudad Universitaria battle the 2nd mixed brigade suffered so many losses that it had to be withdrawn in March 1937 in order to be regrouped.