India
The aftermath of the war saw sweeping changes in the Indian military to prepare it for similar conflicts in the future, and placed pressure on Indian prime minister Jawaharlal Nehru, who was seen as responsible for failing to anticipate the Chinese attack on India. Indians reacted with a surge in patriotism and memorials were erected for many of the Indian troops who died in the war. Arguably, the main lesson India learned from the war was the need to strengthen its own defences and a shift from Nehru's foreign policy with China based on his stated concept of "brotherhood". Because of India's inability to anticipate Chinese aggression, Prime Minister Nehru faced harsh criticism from government officials, for having promoted pacifist relations with China. Indians in general became highly skeptical of China and its military. Many Indians view the war as a betrayal of India's attempts at establishing a long-standing peace with China and started to question Nehru's usage of the term "Hindi-Chini bhai-bhai" (meaning "Indians and Chinese are brothers"). The war also put an end to Nehru's earlier hopes that India and China would form a strong Asian Axis to counteract the increasing influence of the Cold War bloc superpowers. The Indian role in international affairs after the border war was also greatly reduced after the war and India's standing in the non-aligned movement suffered.
The unpreparedness of the army was blamed on Defense Minister Menon, who resigned his government post to allow for someone who might modernize India's military further. India's policy of weaponisation via indigenous sources and self-sufficiency was thus cemented. Sensing a weakened army, Pakistan, a close ally of China, ws emboldened during the Second Kashmir War with India in 1965, however, India had set up the Henderson-Brooks-Bhagat Report to determine what the reason was behind India's unpreparedness in the war, and was prepared for the Pakistani military. The result was inconclusive, since sources were divided on what decides victory. Some sources argued that since India had captured more territory than Pakistan, India had clearly won. However, others argued that India had taken significant losses considering the country's larger military and hence, the outcome of the war was inconclusive. Two years later, in 1967, there was a short border skirmish known as the Chola Incident between Chinese and Indian soldiers. In this incident 8 Chinese soldiers and 4 Indian soldiers were killed.
British journalist Neville Maxwell, controversial writer regarding India, writes that the "hopelessly ill-prepared Indian Army that provoked China on orders emanating from Delhi, and paid the price for its misadventure in men, money and national humiliation". As a result of the war, the Indian government commissioned an investigation, resulting in the classified Henderson-Brooks-Bhagat Report on the causes of the war and the reasons for failure. India's performance in high-altitude combat in 1962 led to an overhaul of the Indian Army in terms of doctrine, training, organization and equipment.
According to James Calvin, an analyst from U.S. Navy India gained many benefits from the 1962 conflict. This war united the country as never before. India got 32,000 square miles of disputed territory even if she felt that NEFA was hers all along. The new Indian republic had avoided international alignments; by asking for during the war, India demonstrated her willingness to accept military aid from several sectors.
And, finally, India recognized the serious weaknesses in her Army.
She would more than double her military manpower in the next two years; and she would work hard to resolve the military's training and logistic problems. India's efforts to improve her military posture significantly enhanced her army's capabilities and preparedness