The Romulan War Wing at the Starfleet Museum is a fascinating read.He's referring Okazaki's version of the war between Earth and the Romulan Star Empire, which in my opinion is way better than the version Star Trek: Enterprise gave us. In the case of the latter, it went counter to what we knew of the war as per Spock in "Balance of Terror": namely that the war was fought between Earth and the Romulans using lasers and primitive atomic weapons. In Enterprise, the ships certainly did not have lasers and nukes and Spock never mentioned the Romulans employing remotely controlled drone ships with the capability to disguise itself as other ships. A pretty useful ability that they evidently never used beyond that war. Odd isn't it?
Okazaki went a different route, describing a war fought between powers who were still weak and not terribly advance - none of the parties involved possess anti-matter reactors, instead relying on fusion reactors to power their ships and warp drives for the early part of the war.
All in all, his take on the Earth-Romulan War is worth reading and his gorgeous ships worth taking a gander at.