The charge of the Rohirrim was IMO centered on old King Theoden. When the Rohirrim arrived, Rohan was stunned by the spectacle before him and it seemed to those closest to him that the king strunk in both body and spirit and was reverting back to the old Worm-tongue controlled dotard before Gandalf's healing.
But as if through divine intervention, a breeze blew and set Rohan's standard fluttering and the supernatural overcast sky suddenly broke and a ray of light shone through. Theoden surprised all when he suddenly grabbed a horn and blew so hard that it shattered. And then he charged, calling out to this riders but seemingly unperturbed should they not follow - the only thing that mattered was Rohan himself, and he was attacking. And onwards the rohirrim charge but Theoden was always before the swiftest rider
Now that was powerful and had it been filmed well could most probably be sniff-sniff also.
