The 3rd (Lahore) Division was an infantry division of the Indian Army and before 1895, the Bengal Army, first organised in 1852. It saw service during World War I as part of the Indian Corps in France before being moved to the Middle East where it fought against troops of the Ottoman Empire.

The Indian Army during British rule, also referred to as the British Indian Army, was the main military force of the British Indian Empire until 1947. It was responsible for the defence of both British India and the princely states, which could also have their own armies. As quoted in the Imperial Gazetteer of India, "The British Government has undertaken to protect the dominions of the Native princes from invasion and even from rebellion within: its army is organized for the defence not merely of British India, but of all possessions under the suzerainty of the King-Emperor." The Indian Army was an important part of the forces of the British Empire, in India and abroad, particularly during the First World War and the Second World War.