This report was prepared for the US Army Materiel Command, at the direction of the Deputy Chief of Staff for Research, Development, and Acquisition. This edition is a continuation of the series of reports that was initiated in 1966. Each in-house RDT&E activity of the Department of Defense is described on one page in this compilation. The data for 1986 are summarized in tables preceding the main test. All current DoD RDT&E funds are listed in the contents alphabetically within each department. Some facilities which do not meet the requirement previously noted are also listed by special request. Organizational changes during FY 1986 appear in Appendix I. Appendix II contains many of the definitions used in this report. Appendix III lists selected abbreviations and acronyms. Appendix IV lists selected key words with page references. Every effort has been made to provide accurate information, particularly fiscal and personnel data. All numbers and statements have been throughly examined. It is hoped that by the means of widespread dissemination, at the Director and Commanding Officer level as well as at the bench level. This document will encourage communication concerning common problems of interest both among the laboratories within each Service and among the individual Services. Keywords: Military research, Military budgets, Research management, Air Force research, Army research, Navy research.