"become illustrious" - Translation from English to Arabic

His dedicated and illustrious service during the first 30 years led to his historic election as the first-ever career officer to become Secretary-General.
ولقد أدت خدمته المتفانية واللامعة في السنوات الثلاثين الأولى إلى انتخابه التاريخي كأول موظف دائم على الإطلاق لمنصب الأمين العام.