sentences:  On 23 December 1936, after receiving in Madrid a retinue formed by Joaquín Ascaso, Miguel Chueca and three republican and independent leaders, the government of Largo Caballero, which by then had four anarchists as ministers (García Oliver, Juan López, Federica Montseny and Joan Peiró), approved the formation of the National Defense Committee.It was a revolutionary body which represented anarchists as much as socialists and republicans.Halfway through February 1937, a congress took place in Caspe with the purpose of creating the Regional Federation of Collectives of Aragon.