noun
roving reporter
A journalist who moves freely without a fixed beat, covering stories as they arise. Often used in newspaper or media contexts.
彼は遊軍記者として、事件があるたびに現場へ飛んでいく。
As a roving reporter, he rushes to the scene whenever an incident occurs.
特派員 is a correspondent assigned to a specific location or beat, while 遊軍記者 moves freely without a fixed assignment.
Compound of 遊軍 (yūgun, 'roving force') and 記者 (kisha, 'reporter'). The term 遊軍 originally referred to a military unit that operates independently, and here it metaphorically describes a journalist not tied to a specific desk.