At the outbreak of the First World War, the Garhwal Brigade was still part of the 7th (Meerut) Division. It was mobilized with the division in August 1914 as the 20th (Garhwal) Brigade and sailed from Bombay on 20 September for the Western Front. It arrived in Marseilles on 12 – 14 October and moved up to the Front, entering the line on the night of 30/31 Octobertaking part in the Battle of La Bassée (10 October – 2 November). While in France, the brigade was known by its geographical rather than numerical designation so as to avoid confusion with the British 20th Brigade also serving on the Western Front at the same time. The brigade served with the division as part of the Indian Corps on the Western Front until the end of 1915.