Embedded Training (ET), means the use of sophisticated simulators for training that are embedded within operational equipment, is an emerging trend in military education for pilots, weapon systems personnel, etc. Training devices and ET are used to provide opportunities for both practicing job skills and original learning, and their effectiveness is measured by level of fidelity, cost, feedback, transfer of training to the operational equipment, and increase in skill level. ET has several advantages over traditional approaches in that it provides: (1) the opportunity for immediate hands-on experience with the operational system; (2) self-paced practice in critical hard-to-master skills; and (3) realistic, system-specific cues, responses, and information. It can also provide a mechanism for site-specific or operational-specific skill qualification testing. Based on computer technology, it is more appropriate to training tasks that require higher level cognitive skills, integrated performance of multiple skills, or team training. First used successfully in the 1950s in the U.S. Air Force, ET is now specified as the preferred training alternative for the design and development of training subsystems for Army materiel systems. Generally, ET progresses through three major analysis stages--concept formulation, training requirements analysis, and training system/component design. The use of the operational equipment to assist in the training of employees appears to be growing in both military and commercial applications. (A number of military projects utilizing ET are listed and five commercial applications are briefly described). (4 references) (BBM)