The formalized 'language' used between ground control and the pilot. The terminology evolved using terms that were clearly heard during battle and less likely to be mistaken over the radio. Examples include: 'bandits', ' 12 o'clock high' and 'tally ho'. The letters of the alphabet were used to identify individual aircraft eg. 'T for Tango' or 'V fo... Found on http://histru.bournemouth.ac.uk/Oral_History/Talking_About_Technology/radar