The Director General of the ASI who brought military precision to the practice of archaeology was R.E.M. Wheeler. He is known for his significant contributions to the field of archaeology in India and for transforming the Archaeological Survey of India (ASI) during his tenure.

R.E.M. Wheeler's Approach
R.E.M. Wheeler adopted a systematic and scientific approach to archaeology, which was influenced by his military background. He believed in conducting archaeological excavations with military precision, focusing on meticulous planning, organization, and attention to detail.

Introduction of Grid System
One of the key innovations introduced by Wheeler was the grid system. He divided the excavation site into grids, which were further subdivided into smaller squares. Each square was systematically excavated, and detailed records were maintained for each layer and artifact found within it. This method ensured a thorough and methodical excavation process, allowing for a better understanding of the site's stratigraphy and chronology.

Standardized Recording and Reporting
Under Wheeler's direction, the ASI implemented standardized recording and reporting practices. Detailed documentation was carried out during excavations, including the recording of precise locations, descriptions of artifacts, and their associations with different layers. This meticulous record-keeping allowed for accurate analysis and interpretation of the excavated material.

Emphasis on Scientific Analysis
Wheeler emphasized the importance of scientific analysis in archaeology. He encouraged the use of various scientific techniques, such as stratigraphic analysis, pottery dating, and typological studies, to understand the sequence and dating of archaeological remains. This approach helped in establishing a more accurate chronology of Indian history.

Training and Professional Development
Wheeler also focused on training and professional development within the ASI. He established the Institute of Archaeology in New Delhi, which provided formal training to archaeologists and promoted research in the field. This institution played a crucial role in producing a new generation of skilled archaeologists in India.

Legacy
R.E.M. Wheeler's military precision approach to archaeology revolutionized the practice in India. His emphasis on meticulous planning, systematic excavation techniques, standardized recording, and scientific analysis set a new standard for archaeological research in the country. His contributions laid the foundation for modern archaeological practices in India and continue to influence the field to this day.