Subhas Chandra Bose's nationalistic sentiments were shaped by several pivotal events. His involvement in the Indian National Congress and subsequent disagreements with leaders like Gandhi pushed him toward more radical views. His experiences during World War II, particularly his alliance with Axis powers, aimed at seeking independence for India through military support, also played a crucial role. The establishment of the Indian National Army was his bold move to challenge British colonial rule. These events fostered a sense of militancy and unity among Indians, inspiring a significant nationalistic movement focused on self-determination and resistance.