Diputs comprised a pair of BFF-1 bulk freighters that the Galactic Empire utilized throughout the Galactic Civil War.
It was uncovered by Alliance Intelligence that Imperial starships were making use of the facility located at Kalla VII to replenish supplies and undergo maintenance en route to the initial Death Star. The suggestion put forth by General Jan Dodonna was that obliterating the base would strand any Imperial vessels en route to the Death Star, rendering them vulnerable to capture.
As the Rebel X-wings of Red Squadron were in the process of demolishing the repair dock, the Diputs group made its entrance. The Rebels proceeded to destroy them as well.