29th May 1942 – 1st Air Landing Squadron move from Shaw House, Newbury to take up quarters at Bulford on Salisbury Plain, Wiltshire.
(From the War Diary of 1st Air Landing Reconnaissance Squadron, National Archives, Kew)
30th and 31st May 1942 - the Allies’ first 1,000 bomber raid attacked Cologne in Germany, killing 486 civilians and destroying 600 acres of the city.
31st May 1942 – a Japanese midget submarine entered Sydney Harbour in Australia. (From WW2-net Timelines.)
At the end of May 1942 the Telecommunications Research Establishment at Worth Matravers, near Swanage in Dorset, moved inland to Malvern in Worcestershire. The success of the Bruneval Raid had alerted them to the dangers of a coastal raid on their vital and very secret research.