In the Battle of Scarif, the group known collectively as Rogue One stole the plans to the Death Star while the Rebel fleet fought the good fight high above the planet in one of the most exciting space battles in Star Wars history.
One of coolest sequences is the part when a Hammerhead corvette rame into a broken-down Star Destroyer so it would crash into another Imperial battleship, and the force of those two ships subsequently took out the shield gate protecting the planet.
During an interview with EW, Rogue One producer John Knoll discussed the thought that went into determining whether the crew of the Hammerhead would make it out alive, specifically by getting off the ship on life on escape pods.
The last shot you see of the Star Destroyers crashing down through the gate — it’s a very subtle thing, and it would probably be hard to tell this — but the lifeboats are all gone on the Hammerhead. It’s my story that the Hammerhead crew got into the life boats and made it out.
While no one aboard the Hammerhead was a major Rogue One character, the ship itself was integral to the Battle of Scarif.