The development of the Warfare Analysis Laboratory (WAL) is represented from the mechanical Air Battle Analyzer of the 1960s and 1970s, through the more technologically enhanced early versions of the WAL, to the state-of-the-art facility opening at APL in May 2000. The Joint Warfare Analysis Department (JWAD) and its predecessor, the Naval Warfare Analysis Department, have used the increasing capabilities of the WAL to expand APL's capabilities to conduct complex analytical studies. In the past, studies have focused on topics such as requirements development, concept evaluation, simulation, and planning. Many JWAD studies apply Warfare Analysis Laboratory Exercises (WALEXs) at key decision points to bring military operators, decision makers, and APL analysts into a collaborative environment that stimulates insights and discussion.