It is slightly odd, but then, there were some outstanding feats by Blenheim crews, both bomber and fighter versions, including the awards of VCs
It was a Blenheim that carried out the very first RAF operation during WW2, a recce to Wilhemshaven - just one hour and three minutes after war had been declared on September 3rd, 1939, and Blenheims which carried out the first attack on Germany the following day.
Slightly disappointed with this particular volume, as it was ordered from a dealer on Amazon, under the normal Osprey title - the copy I received is the abridged version, 69 pages instead of 106, published by Osprey in conjunction with Del Prado, as part of a promotional package. It's still worth having though, and covers what I was looking for.