[RodM]

Hi Peter,

I have not worked with the IT Reports from the early war years, but note that the series in the bound volumes did not commence until April 1941. At least in the late war years, each report covered a 24-hour period, so both day and night raids were covered. That doesn't mean it was so in the early reports, and I expect that the format of the report developed over time. It may be that the early reports only covered night raids.

The precurser to the IT Report appears to have been a report entitled, "Phenomena Connected to Enemy Night Tactics", which commenced in Aug 1940, but appears to be only concerned with night raids (see AIR 14/627-628; 634-635)

In addition to the IT Reports, there are also the final Raid reports, but these don't appear to have commenced prior to Dec 1941, after the BC ORS was established in Sep 1941.

There are the Day Bomb Raid sheets (see AIR 14/3360-3364) for 1939-42, but these may not have much on enemy interceptions.

Cheers

Rod