The 1st Indian Cavalry Division was a division of the British Indian Army which was formed at the outbreak of the First World War. It served on the Western Front, and was renamed the 4th Cavalry Division on 26 November 1916. In March 1918, the 4th Cavalry Division was disbanded; the British units remained in France and the Indian units were sent to Egypt to help form the 1st Mounted Division.
The 2nd Indian Cavalry Division was a division of the British Indian Army formed at the outbreak of World War I. It served on the Western Front, being renamed as 5th Cavalry Division on 26 November 1916. In March 1918, the 5th Cavalry Division was broken up. The British and Canadian units remained in France and the Indian elements were sent to Egypt to help constitute 2nd Mounted Division.
The Meerut Cavalry Brigade was a cavalry brigade of the British Indian Army formed in 1904 as a result of the Kitchener Reforms. It was mobilized as 7th (Meerut) Cavalry Brigade at the outbreak of the First World War and departed for the Western Front where it served as part of the 2nd Indian Cavalry Division.
The 1st (Risalpur) Cavalry Brigade was a cavalry brigade of the British Indian Army formed in 1906 as a result of the Kitchener Reforms. It remained in India during the First World War but took an active part in the Third Anglo-Afghan War in 1919.
The Ambala Cavalry Brigade was a cavalry brigade of the British Indian Army formed in 1904 as a result of the Kitchener Reforms. It was mobilized as 3rd (Ambala) Cavalry Brigade at the outbreak of the First World War as part of the 1st Indian Cavalry Division and departed for France. It served on the Western Front with the 1st and 2nd Indian Cavalry Divisions until it was broken up in March 1918.
The Secunderabad Cavalry Brigade was a cavalry brigade of the British Indian Army formed in 1907 as a result of the Kitchener Reforms. It was mobilized as 9th (Secunderabad) Cavalry Brigade at the outbreak of the First World War and departed for France. It served on the Western Front as part of the 1st and 2nd Indian Cavalry Divisions until it was broken up in March 1918.
The Sialkot Cavalry Brigade was a cavalry brigade of the British Indian Army formed in 1904 as a result of the Kitchener Reforms. It was mobilized as 2nd (Sialkot) Cavalry Brigade at the outbreak of the First World War as part of the 1st Indian Cavalry Division and departed for France. It served on the Western Front with the division until it was broken up in March 1918.
The 5th (Mhow) Cavalry Brigade was a cavalry brigade of the British Indian Army that saw active service in the Indian Army during the First World War. Formed in November 1914, it served on the Western Front as part of the 2nd and 1st Indian Cavalry Divisions until it was broken up in March 1918.
The 6th Indian Cavalry Brigade was a cavalry brigade of the British Indian Army that saw active service in the Indian Army during the First World War. It took part in the Mesopotamian campaign and was broken up soon after the end of the war.
The 2nd Mounted Division was a cavalry division that served as part of the Egyptian Expeditionary Force in Palestine in World War I. It was formed in April 1918 when three brigades already in Palestine were merged with elements of the 2nd Indian Cavalry Division withdrawn from the Western Front. In July 1918, the division was renamed as the 5th Cavalry Division. It remained in Palestine after the end of the war on occupation duties until finally broken up in 1920.
II Indian Brigade, Royal Horse Artillery was a brigade of the Royal Horse Artillery formed at the outbreak of World War I. It served with the 2nd Indian Cavalry Division on the Western Front. It was redesignated XVII Brigade, RHA in February 1917 and XVII Army Brigade, RHA just before being disbanded in April 1918.
The Ambala Brigade was an infantry brigade of the British Indian Army that formed part of the Indian Army during the First World War. It was formed in November 1914 to replace the original Ambala Brigade that had been mobilized as the 3rd (Ambala) Cavalry Brigade for service on the Western Front. It remained in India throughout the war.
The 41st Indian Brigade was an infantry brigade of the British Indian Army that saw service with the Indian Army during the First World War. It served in the Mesopotamian Campaign on the Euphrates Front throughout its existence. It was not reformed for the Second World War.
The 35th Indian Brigade was an infantry brigade of the British Indian Army that saw active service with the Indian Army during the First World War. It took part in the Mesopotamian campaign and was disbanded shortly after the end of the war. It was not reformed for the Second World War.
The Lucknow Brigade was an infantry brigade of the British Indian Army formed in 1907 as a result of the Kitchener Reforms. It was mobilized as 22nd (Lucknow) Brigade at the outbreak of the First World War as part of Indian Expeditionary Force E. It served in Egypt in 1915 before being broken up in January 1916.
The Ferozepore Brigade was an infantry brigade of the British Indian Army that formed part of the Indian Army during the First World War. It was formed in December 1914 as part of the 3rd Lahore Divisional Area for service on the North West Frontier and renamed as 44th (Ferozepore) Brigade in August 1915. It remained in India throughout the First World War but saw active service in the Third Anglo-Afghan War with the 16th Indian Division.
The Garhwal Brigade was an infantry brigade of the British Indian Army that formed part of the Indian Army during the First World War. It was formed in April 1917 to replace the original Garhwal Brigade that had been mobilized in August 1914 as the 20th (Garhwal) Brigade for service on the Western Front. It remained in India throughout the war.
The 4th (Secunderabad) Cavalry Brigade was a cavalry brigade of the British Indian Army that formed part of the Indian Army during the First World War. It was formed as Secunderabad Cavalry Brigade in February 1915 to replace the original brigade that had been mobilized as the 9th (Secunderabad) Cavalry Brigade for service on the Western Front. It remained in India throughout the war.
The 7th Meerut Divisional Area was an infantry division of the British Indian Army that formed part of the Indian Army during the First World War. It was formed in September 1914 to replace the original 7th (Meerut) Division that had been mobilized in August 1914 for service on the Western Front. It was renamed as Meerut Division in June 1917 and remained in India throughout the war. The division was broken up in 1920.
The 3rd Lahore Divisional Area was an infantry division of the British Indian Army that formed part of the Indian Army during the First World War. It was formed in September 1914 to replace the original 3rd (Lahore) Division that had been mobilized in August 1914 for service on the Western Front. It was abolished in May 1917 when its remaining responsibilities were passed on to the 16th Indian Division.
British India 
British Indian Army