The report contatins a number of lectures and poster abstracts, which were presented during the Third International Symposium Against Chemical Warfare Agents, which took place in Umeå, 11-16 June 1989. The papers in the Supplement were presented during session entitled Body Protection, Detection, Medical Protection, Esterases, Miscellaneous, Poster and Video sessions. The report also contains a list of participants. Key words: Detection, medical protection, respiratory protection, decontamination, collective protection, body protection, chemical warfare, filter, filtration.