«فُرْسَانِ الْبَرَاعَةِ وَأَرْبَابِ الْيَرَاعَةِ»
Horsemen of excellence and masters of the pen.
Fursān al-barāʿah turns virtuosos into horsemen; arbāb al-yarāʿah calls accomplished writers masters of the pen. Neither phrase has to mean literal cavalry or exclusive ownership of writing instruments.
The paired possessive constructions elevate skill in expression and in writing. The praise is social and literary, not a report of military experience.
“Horsemen of skill” preserves the idiom; “cavalry officers” disregards the literary setting.