Orders

Order 4: If the Chancellor dies, the command of the Grand Army of the Republic (GAR) is passed to the vice chair of the Senate
Order 5: If the Chancellor is deemed unfit to issue order, the command of the GAR is passed to the Chief of Defense Staff
Order 37: The GAR can, in order to arrest a single individual, perform mass arrests to force the population to surrender the individual
Order 65: If the Senate or the Security Council declare the Chancellor unfit to issue orders, the GAR is authorized to detain (even with force) the Chancellor until a successor is appointed
Order 66 If any Jedi officer acts against the interests of the Republic, the GAR is authorized, following a direct command from the Chancellor, to remove the officers with lethal force

Marshal Commander
Senior Commander
Regimental Commander
Battalion Commander
Major
Captain
Lieutenant
2nd Lieutenant
Sergeant-Major
Sergeant
Corporal
Cadet