Introduction:
Subhas Chandra Bose, popularly known as Netaji, was one of the prominent leaders of the Indian independence movement. He played a significant role in India's fight for freedom from British colonial rule. Bose's contributions were instrumental in mobilizing the masses and organizing a strong nationalist movement against British imperialism.

Leadership in the Indian National Congress:
1. Bose was elected as the President of the Indian National Congress in 1938 and 1939. During his tenure, he emphasized the need for complete independence rather than seeking dominion status.
2. He advocated for mass mobilization and initiated various measures to strengthen the party's organizational structure. He emphasized the need for unity among different factions within the Congress.

Formation of Forward Bloc:
1. Dissatisfied with the Congress' approach towards the freedom struggle, Bose formed the Forward Bloc in 1939. It aimed to unite like-minded individuals and groups who were committed to achieving complete independence.
2. The Forward Bloc played a crucial role in galvanizing the youth and mobilizing them for the freedom struggle. It advocated for radical measures and direct action against the British rule.

Role in the Armed Struggle:
1. Bose believed in the importance of armed struggle to liberate India from British rule. He established the Azad Hind Fauj or the Indian National Army (INA) in 1942, which aimed to fight alongside the Axis powers against the British during World War II.
2. The INA played a significant role in inspiring nationalist sentiments among Indians and challenging British dominance. It garnered support from soldiers of the British Indian Army and civilians alike.
3. Bose's leadership and vision in organizing the INA instilled a sense of pride and determination among Indians, especially the marginalized sections of society.

International Efforts:
1. Bose sought international support for India's independence struggle. He established diplomatic contacts with various countries, including Germany, Japan, and Italy, during World War II.
2. Bose's collaboration with these countries aimed to gain military and political assistance for India's liberation. He established the Provisional Government of Free India in 1943 in Singapore with the support of Japan.
3. Although his international efforts were not entirely successful, they showcased India's determination to achieve freedom and garnered international attention towards the Indian independence movement.

Conclusion:
Subhas Chandra Bose made significant contributions to India's fight for independence. His leadership, organizational skills, and emphasis on armed struggle galvanized the masses and instilled a sense of nationalism among Indians. Bose's efforts in mobilizing the Indian National Congress, formation of the Forward Bloc, and establishment of the INA played a crucial role in the freedom struggle. His international efforts aimed to gain support and recognition for India's struggle on the global stage. Netaji's contributions continue to inspire generations and serve as a reminder of the relentless pursuit of freedom and justice.