Onan,
Reference the choice of the name for the operation at Amiens, jut got home and was able to look it up, (And the Walls Came Tumbling Down, Jack Fishman, 1982, ISBN 0285 625195)
The name selected for the operation was originally "Renovate", but was changed to Jericho on the decision of AVM Basil Embry at the meeting when he finally authorised the attack....
Winding up the meeting, Embry sat back and said: "I am making a slight change in arangements. As so much depends on those walls tumbling down, I think, from now on, the operations code name should appropriately be - Jericho".