Initially rising from the remnants of Northern California hardcore bands Some Still Believe and Breaker Breaker, Allegiance was a San Francisco Bay Area-based straight edge hardcore punk band that existed from April 2002 to February 2008.

Throughout their existence, the band were regulars at local DIY-Punk venue 924 Gilman in Berkeley, California, where they played both their first and final shows.

Allegiance extensively toured the West Coast and throughout the rest of the United States and Europe.

On January 10, 2025, the band officially announced a reunion show, which will be taking place at 924 Gilman in Berkeley, California on April 25th, 2025 as part of the 2025 RBS Festival.

The band's final release and featured 11 tracks in total, including both songs from the "Out Of My Blood" 7-inch.