I love this story. I love the great background it gives to that fateful battle of the Last Alliance, and I love the not-so-favorable view at Gil-galad's role there; and the contrast between the lighter mood of the first chapter and the sad and chilling one of the second chapter works very well. But what I love most is that you manage to make the characters coming completely alive, and completely believable. It is easy to feel with them and identify with them here.
The slash element is handled very well, IMHO; the encounter is handled tastefully and very believable, too.
And more. Normally, writing slash in Tolkien Fanfic, we tend to take a conscious step back from canon and trust in our readers willing suspension of disbelief, because while homoerotic encounters and relationships are not completely impossible even in Middle Earth, it is hardly what the master himself would have imagined. But in this story, you manage to bring the homoerotic encounter accross so totally believable and fitting to the situation, that no suspension of disbelieve is needed.The whole situation feels totally believable and perfectly possible, and it feels as fitting perfectly into the canonical universe under the circumstances you give us here. Applause! Very, very well done! This will always be one of my favorites.