The Bangladesh Red Crescent Society (also abbreviated as BDRCS) is a humanitarian organization and auxiliary to the Government of Bangladesh. The organization was established in 1973 as the Bangladesh Red Cross Society through the Presidents Order 26. It changed its name to Bangladesh Red Crescent Society in 1988 while the country adopted Islam as the constitutional religion. It has its headquarters in Dhaka and also has 68 Units. A Unit is constituted in each of the 64 districts and in the Metropolitan cities of Dhaka. Chittagong, Rajshahi & Khulna. The society has played an instrumental role in relief and rehabilitation during floods, cyclones and other natural disasters which are frequent in various parts of Bangladesh They are also one of the largest sources of blood donation throughout the country.