The bulk of the confidential war work fell naturally upon the Criminal Investigation Department. Before the organization of the Postal Censor’s office, and in some cases also afterwards, the department scrutinized letters addressed to enemy subjects; it studied closely the daily and weekly newspapers in all languages, and prepared a daily report for the military authorities on the publication of war-news; it carried out requests for information and assistance from the Brigade Office, the Customs Department, and the Controller of Hostile Trading Concerns. It prepared lists for Government of hostile, allied and neutral foreigners resident in Bombay; it mustered all German and Austrian males, numbering respectively 189 and 37, at the Head Police Office, confiscated their fire-arms, and eventually dispatched them under arrest to the Ahmadnagar Detention Camp, whither were also sent many enemy foreigners subsequently removed from enemy ships in the harbour. It also kept under surveillance a certain number of persons who were permitted to remain on parole in Bombay; it kept under observation and deported a large number of transfrontier Pathans and tribesmen, under special powers granted for this purpose to the Commissioner; it arrested the officers and crew of a captured Turkish vessel and placed them in detention, and deported many Turkish subjects to Jeddah. The department also housed and fed for two months two hundred and sixty Chinese, who were removed from German prize vessels. One of the more amusing features of their arrival was the disgust shown by the Muhammadan police-officer, told off to arrange for their supply of food, when they begged him in a body to buy up all the pork he could find in the bazaar. Military prisoners from Mesopotamia were taken over and placed in charge of the proper authorities; constant inquiries were made about firms suspected of trading with the enemy; and from the end of 1915 the department had to organize a system of passes for all persons desiring to land at Basra or Mohammerah.