The 4th Training Day, conducted on 12 September 2015, began with Physical Training at 0700H. For this training day, the cadets had their first battalion run, a round around the academic oval. Then, the cadets were taught the Old Drill Regulation, the more formal and traditional drill of the UPROTC. After a short break with the Corps of Sponsors, the training ended with a lecture regarding Disaster Risk Reduction and Management, which also served as an introduction to the Urban Survival Orientation Course.