The codename for India's first nuclear test in 1974 was "Operation Smiling Buddha." This test marked India's entry into the group of countries with nuclear capabilities.

Operation Smiling Buddha
Operation Smiling Buddha was the codename for India's first nuclear test conducted on May 18, 1974, in Pokhran, Rajasthan. This historical event marked India's entry into the nuclear club as the sixth country in the world to successfully conduct a nuclear test.

Significance of the Test
1. Strategic Deterrence: The test was seen as a demonstration of India's ability to deter potential adversaries and protect its national security interests.
2. Technological Achievement: The successful test showcased India's indigenous nuclear capabilities and technological advancements in the field of nuclear weapons.
3. Political Statement: The test sent a strong political message to the international community, asserting India's sovereignty and independent foreign policy.
4. Global Response: The test received mixed reactions from the international community, with some countries condemning it as a violation of non-proliferation norms while others acknowledging India's right to ensure its security.

Impact on India's Nuclear Policy
1. Shift in Policy: The test solidified India's stance on nuclear weapons, leading to the formulation of a nuclear doctrine based on credible minimum deterrence.
2. Role in Nuclear Disarmament: India's nuclear test raised concerns about nuclear proliferation and the need for global disarmament, prompting India to advocate for nuclear disarmament on the international stage.
3. Enhanced Security: The test bolstered India's national security and strategic posture, serving as a deterrent against potential threats.
In conclusion, Operation Smiling Buddha was a landmark event in India's history, shaping its nuclear policy and asserting its position in the global nuclear landscape.