Back to the OP.
Col. Tim Collins' follow-up by the American actually repeated 'Its hammer time' a number of times in a shouting rant-style delivery. That was the complete extent of the speech....
Also, I heard on the radio yesterday, at the commemoration of the Dambuster raids, Richard Todd, who played Guy Gibson in the eponomous 1955 film say in response to the interview asking if he knew of the raids at the time.
His response? "No, I was occupied with other things at the time".
The conversation was not expanded upon, but later in the show the interviewer researched what, exactly, Mr Todd was engaged with in 1943 at the time of the Dambuster raids. What she found out will surprise no-one familiar with the British trait of understatement, that, in fact, he was leading the planning for (and was amongst the first to land on) the DD assault.