You may find that 'Initial and pitch' is American terminology.
At Barksdale for Giant Voice 1979, we asked what a VRIAB was in spam-speak. It seems that the B-52, unlike the Vulcan, didn't do such things, so the best they could suggest was "High-speed gear-up low approach and a tactical pitch into the closed pattern"....
Needless to say, we stuck with 'VRIAB'!