The battle began soon after the wrecking of the Sovereign and Delta encountered a Gas Barge which they decided to hijack to get to Anvil Gate since it was a long way to go.
On their way to the Gas Barge Delta encountered the Savage Locust base of operations, they were building a new home in the Deadlands and multiple Gas Barges were bringing in building supplies and personnel and so on. Delta fought through the Savage Locust city and cleared it out.
They then proceeded to capture the Gas Barge, after fighting Palace Guards who tried to stop them. As they left the now-clear Savage city in the Gas Barge they encountered Dizzy fighting Locust and helped him out, they then headed on for Anvil Gate on the way their the fought against numerous Reavers and Queen Myrrah appeared again and attacked the Barge with her Tempest, the Barge crash-landed near Anvil Gate and Delta were picked up and taken there in trucks, arriving just in time for the Battle of Anvil Gate.