For our last Atreides track to feature from the Emperor: Battle for Dune soundtrack, we have "Fighting in the Dunes" which again employs passages heard in music from previous Dune games. The music sounds very ominous, heroic and militaristic.
There's a lot of fighting in dunes on Arrakis... I mean there is a reason they colloquially call the planet "Dune" after all. Arrakis is apparently the third planet orbiting the star Canopus. The planet is almost entirely desert and is modelled after the biomes of Arabia with similar flora and fauna. There is no longer any surface water on Arrakis but the Fremen employ the use of underground canals called qanats to obtain water.