Used when the struggle or fight is actually until death, often in historical or fantasy contexts. The gladiators would fight to the death in ancient Roman arenas.
Pro Tip 2/3
Total Commitment
Emphasizes the seriousness or commitment of the situation. The soldiers were ready to defend their city to the death.
Pro Tip 3/3
Intensity
Suggests a scenario of extreme intensity that cannot be easily stopped or changed. The two nations were locked in a battle to the death.