Grammatically, dictator orders his people to wear different outfit while he is about to die. He is too weak, he knows he is about to die, he is lying on the bed and he gives this order. Olum dosegi is bed of death. Which means this bed will bring him death.
One recommendation: If this "dictator" is Ataturk, throw the book to the trash. He was not a dictator nor he had such an order in his final year.
Order someone to do something = Birisine bir seyi yapmasiNI emretmek
Kiyafetler giymesiNI emretti