A number of British volunteers, including Tom Wintringham, David Marshall and Ramona and Nat Cohen, and Scots nurse Annie Murray, arrived in Spain during August–September 1936. The men formed the Tom Mann Centuria, and in July/August they had been part of an attempt to liberate Majorca. Later they were joined by Bill Scott, becoming a rifle company in the German-speaking Thälmann Column. The Thälmann Battalion later formed part of XII International Brigade and fought in the Siege of Madrid, including the Battle of Ciudad Universitaria.