The Defence School of Electronic and Mechanical Engineering (DSEME) is one of four Defence Schools within the Defence College of Technical Training (DCTT) of the British Ministry of Defence. It was formed on 1 Apr 2010 and comprises a Headquarters, the British Army's 8 Training Battalion of the Royal Electrical and Mechanical Engineers (REME), and the REME Arms School all based at MOD Lyneham, and the Royal Air Force's No. 4 School of Technical Training also at MOD Lyneham from 2024.