This report describes a job analysis of U.S. Army Special Forces (SF) jobs. The overall goal of the project was to gather information that will aid in the development of new SF performance measures. This goal required two types of information-the individual attributes requisite to SF performance and the field performance of SF jobs. The research involved five major steps: (1) development of workshop materials and logistics, (2) administration of workshops to collect critical incidents and task and attribute ratings, (3) analysis of task and attribute data, (4) development of performance categories and behavior-based rating scales, and (5) analysis of linkages between attributes and performance categories. Active duty SF noncommissioned officers (NCOs) and officers and a Subject Matter Expert Panel composed of SF officers and NCOs at the Special Warfare Center (SWC) participated in all parts of the project. The primary products of the project were behavior-based rating scales for SF jobs, definitions of individual attributes important for successful performance in SF jobs, and job task ratings. These products form the foundation for development and validation of selection and classification measures for SF jobs.