First Battle of Berengaria

The First Battle of Berengaria was an engagement between the Romulan Star Empire and United Earth during the Earth-Romulan War.

Background
Berengaria VII was to be the home of Earth Starfleet's Starbase 1 and construction was underway by 2155. 

The Battle
A small fleet of Romulan vessels entered the system and immediately wiped out both Starbase 1 and the Vulcan science outpost located on Berengaria. Following that destruction the Earth starship Discovery entered the system and was engaged by the Romulan warships. The Romulan ships then opened fire on the Discovery with nuclear weapons, blinding the Discovery. They followed this with more attacks on the Starfleet vessel, forcing the ship's captain to destroy Discovery in order to keep it from the Romulans. 

Aftermath
The defeat of Starfleet gave the Romulans a beachhead even closer to Earth than any planets held before. It also resulted in the destruction of one of Earth's few vessels.