Scenes Tolkien alluded to or briefly mentioned

[Tuor of Gondolin]

related events:
(Prince Imrahil would have to be included here)
1)Imrahil leads his cavalry out to assist the Rohirrim
2) He meets Theoden's guard bringing Theoden's body to Minas Tirith
and acknowledges his charge
3) Aragorn, Eomer, and Imrahil walking back after the battle and going to
see Theoden in state and then the Houses of healing. It would have been
quite a dramatic scene to see Theoden.

...before the dais lay Theoden King of the Mark upon a bed of state; and twelve torches stood about it, and twelve guards, knights of both Rohan and Gondor. And the hangings of the bed were of green and white, but upon the king was laid the great cloth of gold up to his breast, and upon that his unsheathed sword, and at his feet his shield. The light of the torches shimmered in his white hair like sun in the spray of a fountain, but his face was fair and young, save that a peace lay on it beyond the reach of youth; and it seemed that he slept.