épreuve du feu (zn):
vuurproef(en) situation in which a soldier or other combatant faces the discharge of opposing weapons.
(en) idiomatic: any ordeal which tests one's strength, endurance, or resolve.
(en) test in which a person is exposed to flames.
(en) difficult and trying experience., vuurdoop(en) idiomatic: any ordeal which tests one's strength, endurance, or resolve.
(en) test in which a person is exposed to flames.
(en) situation in which a soldier or other combatant faces the discharge of opposing weapons.
Via: Dbnary en WikiWoordenboeken
Via: Memodata.com