Noblisse oblige is a term or concept where the Greeks feel:

Andromache is convinced Astyanax will suffer greatly if Hector fights in the war and against Achilles.

Convinced by Helenus' advice, Hector agrees to rally the Achaeans and restore their spirit to fight the Trojans.

Before going off to battle, Hector asks his mother Hecuba to assemble all the women to make offerings to the goddess Athena

Before going off to war, Hector scolds his brother Priam for nursing his anger rather than fighting for his country.

Before going off to war, Hector tells his wife Helen that he must fight for his country out of honor or he will be considered a coward.

Before going of to war, Hector tells Helen she can't persuade him not to fight; he feels it is his duty to help his people.

Before going off to war, at his mother's urging, Hector drinks wine for strength and to honor Zeus