His approach was designed for curriculum development in the U.S. military and is still incorporated into much of the instructional design (ID) model. In today's military, the Tyler procedural approach is used for competency-based training (CST). The Tyler procedural approach is used as a guide for military trainers to plan curriculum and determine what should be taught, learned, and how it should be organized to teach large masses of students. In our training a large mass of up to 10,000 students is considered