Final answer:
President Bush's military tribunals are separate from the military's courts-martial system and were deemed illegal in the Hamdan v. Rumsfeld case.
Step-by-step explanation:
President Bush's military tribunals are not part of the military's courts-martial system, which indicates that they operate differently. The military's courts-martial system is used to try members of the military for violations of military law, while the military tribunals established by President Bush were specifically created to handle detainees at Guantánamo Bay who were considered enemy combatants. These tribunals lacked certain protections required by the Geneva Conventions and the Uniform Code of Military Justice, making them illegal as stated in the Hamdan v. Rumsfeld case.