Good Changes

[Essex]

Originally Posted by The Saucepan Man

To my mind, it seems far more credible that he would choose one steed upon which to ride to war and stick to that.

I agree. I think the reason why he does this in the book is that he will be the first foe ever to ride through the gates of Minas Tirith. So it was a symbolic gesture from the WK in going through the gates on his horse. And probably a symbolic gesture to his troops to ride out at the head of the army with them from minas morgul rather than on his fell beast.

therefore getting off his fell beast and riding through the gate on a horse would not have worked film wise without narration to explain him being the first foe through the gates.