David Weber's earlier honor harrington novels are pretty good. They focus around a couple of characters, but the backdrop is an interstellar war that swells to rather epic proportions several books into the series. The success seems to have gone to Weber's head, though, because the last couple of books have been way longer than they should have been, and suffer mightily for it, I think.

The publisher, Baen, has a "free library" where they provide a bunch of full ebooks free, and you can get the first couple in the series from there.

It's definitely "light" reading.

Two books, _On Death Ground_ and _Shiva Option_ by Weber and White.

Huge fleets, transiting warp-worm-holes.  Battle stations, mines, various ship classes, missile and beam and slug weapons.  Short range fighters launched from carriers.

The works.

I'll second LTjim's suggestion, those Weber books are much better than the ones that I suggested for Sins-style battles.