This report provides a summary of current land.based munition detection sensor development. Sensors are categorized based upon the principle of their operation: electromagnetic, conductive, mechanical, optical, acoustic, and chemical). Each category is subdivided into particular operational sensor types. Theory of operation for each particular sensor type is provided, as well as a discussion of advantages and disadvantages of each. A discussion of sensor performance is included. The final section of the report is a survey of commercially available munition detection sensors along with comments concerning their performance.