Harmison's first delivery of the series in Australia in 2006 went straight to Andrew Flintoff at second slip, setting the tone for a humiliating 5-0 whitewash.
But all-rounder Broad can still recall how Harmison bowled a brutal opening spell at Lord's in 2005 when striking Justin Langer and Aussie skipper Ricky Ponting.
England achieved a memorable 2-1 triumph and now Broad wants the England side to adapt the same attitude on Wednesday.
He said "The first session of any series is absolutely vital.
"It is a case of getting the first punch in, so to speak, and then go on from there.
"We do know how vital momentum is in a Test match series."
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