The British Battalion (1936–1938; officially the Saklatvala Battalion) was the 16th battalion of the XV International Brigade, one of the mixed brigades of the International Brigades, during the Spanish Civil War. It comprised British and Dominion volunteers. History Early volunteers 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. Another group of British volunteers – among them Jock Cunningham and John Cornford – fought with the French-speaking Commune de Paris Battalion, in the XI International Brigade. It also fought in the Siege of Madrid, including the battles for University City and Casa de Campo. In December 1936, 145 British volunteers formed No. 1 Company of the French-speaking Marseillaise Battalion, part of the XIV International Brigade. They fought on the Córdoba front during December, and on the Madrid front during January 1937. Heavy fighting on 15 January at Las Rozas reduced the active ranks to 67. Formation In January 1937, the survivors of No.1 Company joined with 450 new British, Irish, and Dominion volunteers at Madrigueras, near Albacete, International Brigades headquarters. They were formed into an English-speaking battalion, with three infantry companies (Nos. 1, 3, 4) and a machine-gun company (no. 2). Canadian Bert "Yank" Levy served as an officer in No.2 company of the Saklatvala Battalion, under Wintringham from 1937. He was captured at the Battle of Jarama and spent six months in a Francoist gaol until he was released in a prisoner exchange. The battalion was numbered the 16th battalion of the International Brigades. It was formally named after Shapurji Saklatvala, the former Communist Member of Parliament (MP) for Battersea. However, this name never caught on and it was normally known as the "British Battalion". The Spanish also referred to it as "el batallón británico" or "el batallón inglés". Number 1 company was later called the Major Attlee Company after the leader of the British Labour Party, who visited the British volunteers in December 1937. The British Battalion was attached to XV International