The General Service Respirator (GSR) has been developed to provide the UK Armed Forces with the highest levels of respiratory and ocular protection against chemical, biological, radiological, and nuclear threats. GSR offers previously unprecedented levels of protection and significantly reduces physiological and psychological burden experienced by the user thanks to features such as an increased field of view, reduced breathing resistance and improved drinking system. GSR will be personal issue for all Service Personnel, together with entitled civilians and others closely allied with the Armed Forces such as the Royal Fleet Auxiliary.