Sino-Indian War, 1962
India fought a month-long border war against China in 1962. Neither nation deployed air or naval resources during a conflict heavy with mountain combat. China ended the war by declaring a unilateral ceasefire after it had taken all the territory it had claimed.
The defeat prompted India to make major changes in its military. The Department of Defence Production was established to create an indigenous defence production base, which would be self-reliant and self-sufficient. Since 1962, 16 new ordnance factories have been built under the program.
Read more about this topic: Military History Of India, Republic of India, Major Wars