band structure calculations. A.S. Young, co-recipient of Rank Prize for Optoelectronics in 1976. In 1956, R.A. Smith presented a comprehensive account of the contributions of RRE to physics to the Royal Society. Radar, Guided weapons and Engineering Divisions Although less conspicuous among academic scientists, these divisions were major players in the defence community, both in policy decision making and as an interface with industry. Development and production contracts brought staff of several companies on site, and extramural contracts strengthened ties with industry still further. "in radar alone: Plessey and Decca for aerials and waveguides, Plessey, Hilger & Watts, Clarke Chapman and Curran for millimetre-wave radar, and Mullard for precision bombing and radar reconnaissance". On returning to RRE as Director in 1962, George Macfarlane reorganized the technical departments into: Military and Civil Systems (comprising Ground Radar and Air Traffic Control, Guided Weapons and Airborne Radar groups), Physics and Electronics (comprising Physics and Electronic Groups) and Engineering. "Despite the policy shift away from fighters ... to guided weapons for UK air defence, ... RRE continued to argue for strike aircraft and kept up the necessary radar research programs." In December 1968, the report on the programming language ALGOL 68 was published. On 20–24 July 1970, a working conference was arranged by the International Federation for Information Processing (IFIP) to discuss the problems of implementing the language. A small team from RRE attended to present their compiler, written by I. F. Currie, Susan G. Bond, and J. D. Morrison. ALGOL 68 was complex: implementing it was estimated to need up to 100 man-years, using multi-pass compilers with up to seven passes. The RRE team described how they had already implemented a one-pass compiler, which was already in production for engineering and scientific uses. It was the first working version of ALGOL 68. Senior staff, of the divisions at various times included G.W.A (Geoffrey) Dummer, electronics engineer. His early work is described in the TRE article. His oversight of the large contingent of electronics contractors continued, and he was appointed Superintendent of Applied Physics. In 1964 he sponsored a symposium on Electronic Beam Techniques for Microelectronics at R.R.E. He published over 30 books, was responsible for much further publishing on electronics. He was awarded an MBE, the American Medal of Freedom, the Wakefield Gold Medal of the Royal Aeronautical Society, and the Cledo Brunetti Award of the Institute of Electronic and Electrical Engineers W.