When the Covenant attacked Pirth City, the Arcadian Patrol fought the Covenant alongside the SPARTAN-II Red Team. The policemen were no match for the invaders obviously, but bravely kept fighting in order to give civilians time to evacuate. Alongside the Spartans and Marine forces, the Arcadian Patrol suffered heavy casualties but was able to hold off the Covenant long enough for hundreds of civilians to escape. It can be assumed that it was dissolved after the battle, because the remainder of the colony (mostly located in Abaskun) fell into lawlessness.