Explanation:

Chittagong armoury raid, also known as the Chittagong uprising, was an attempt on 18 April 1930 to raid the armoury of police and auxiliary forces from the Chittagong armoury in the Bengal Presidency of British India (now in Bangladesh) by armed Indian independence fighters led by Surjo Sen.

The raiders were members of revolutionary Indian Republican Army, who favoured armed uprisings as a means to achieve India's independence from British colonial rule. They were inspired by the 1916 Easter Rising in Ireland and led by Surya Sen. However, they were ideologically influenced more by the Communists in Soviet Russia. Many of these raiders later became Communists. The group included Ganesh Ghosh, Lokenath Bal, Ambika Chakrobarty, Harigopal Bal (Tegra), Ananta Singh, Anand Prasad Gupta, Tripura Sen, Bilash Dey, Bidhubhusan Bhattacharya, Pritilata Waddedar, Kalpana Dutta, Himangshu Sen, Binod Bihari Chowdhury, Subodh Roy, Monoranjan Bhattacharya.