As war between Germany and Britain began to seem likely, Indian nationalists at home and abroad decided to use the war for the nationalist cause. Through Kishen Singh, the Bengal Samiti cell was introduced to Har Dayal when Dayal visited India in 1908. Dayal was associated with India House, then headed by V. D. Savarkar. By 1910, Dayal was working closely with Rash Behari Bose. After the decline of India House, Dayal moved to San Francisco after working briefly with the Paris Indian Society. Nationalism among Indian immigrants (particularly students and the working class) was gaining ground in the United States. Taraknath Das, who left Bengal for the United States in 1907, was among the Indian students who engaged in political work. In California, Dayal became a leading organiser of Indian nationalism amongst predominantly-Punjabi immigrant workers and was a key member of the Ghadar Party. With Naren Bhattacharya, Jatin met the crown prince of Germany during the latter's 1912 visit to Calcutta and obtained an assurance that arms and ammunition would be supplied to them. Jatin learned about Bose's work from Niralamba Swami on a pilgrimage to Brindavan. Returning to Bengal, he began reorganising the group. Bose went into hiding in Benares after the 1912 attempt on Hardinge but he met Jatin towards the end of 1913, outlining prospects for a pan-Indian revolution. In 1914 Bose, the Maharashtrian Vishnu Ganesh Pingle and Sikh militants planned simultaneous troop uprisings for February 1915. In Bengal, Anushilan and Jugantar launched what has been described by historians as "a reign of terror in both the cities and the countryside ... [which] ... came close to achieving their key goal of paralysing the administration". An atmosphere of fear severely affected morale in both the police and courts. In August 1914, Jugantar seized a large amount of arms and ammunition from the Rodda company, a Calcutta arms dealer, and used them in robberies in Calcutta for the next two years. In 1915, only six revolutionaries were successfully tried. Both the February 1915 plot and a December 1915 plot were thwarted by British intelligence. Jatin and a number of fellow revolutionaries were killed in a firefight with police at Balasore, in present-day Orissa, which brought Jugantar to a temporary end. The Defence of India Act 1915 led to widespread arrests, internments, deportations and executions of members of the revolutionary movement.