Just Ad Nauseam
From Halopedia, the Halo wiki
Just Ad Nauseam is the sixth track in Halo Wars: Original Soundtrack.
The track features an upbeat melody by electric guitar, accompanied by vocals and synth notes. Piano, percussion, and strings join in as accompaniment before reaching a climatic ending by vocals, strings and percussion.
This tracks plays during Halo Wars gameplay whenever the player commands their units to attack an enemy base.
"Ad nauseam" is latin for "sea sickness" or "sickness".