1964 July - August Includes Lighthill's letter to the Permanent Secretary, Ministry of Aviation, 5 August 1964, summarising his period at the RAE as follows: 'I see that, on behalf of the R.A.E., I have been the general who won all his battles except the last one - and lost the war. Now I have, simply, to cut my losses, and console myself with the fact that I have wasted only five years of my life'. 1964