According to my source, which predates the internet, Brize certainly opened in 1937. It had permanent accommodation and two 2000 yard runways of concrete and woodchip by 1944. It belonged to 23 Gp and was a heavy glider conversion unit.
Clearly the photo, taken in 1945, was after the site was 'cleared' as part of the chemtrail introduction and the laying of the chem pipes around the base for the US. Cleared, as Siseman says, meant artful camouflage to deter Russian satellites that might have been built in secret during the war.
PS
In case anyone thinks it is a much earlier photograph, RAF Broadwell was not opened until 1943.