"The years of the Second World War were a curiously productive period for archaeology in Britain. The famous Anglo-Saxon treasures of Sutton Hoo were hastily dug out in the months before war broke out, and `rescue archaeology' - the emergency excavation of construction sites - was born in the work carried out by WF Grimes on new defence installations all around Britain. "... to quote Mike Parker Pearson

Grimes was responsible I think for situating two temporary airfields at Bath, both on bronze age burial cemeteries, - Charmy Down and the Lansdown. There is one of the those pillbox affairs below Kelston round hill on the Lansdown, probably, as in days of old, (civil war battle) this was a prime site for defensive surveillance of Bristol. Its difficult to get up to the hill, and there are still traces of the old concrete track; Nearby, in a hedge which was being cut they found a body - it had been there for two years.
I think Grimes identified flat sites for airfields, in Wales as well, and his archaeological knowhow of prehistoric sites gave him an advantage. Wonder they did'nt excavate barrows, shore them up and use them as hideouts..