In England, a regiment liable to be ordered into other quarters, at home or abroad; a regiment of the line.
Gnu Collaboartive International Dictionary of English: licensed under The Code Project Open License (CPOL)
Use "marching regiment" in a sentence
"To be a priest, under a "vow of obedience", was a very different thing to being one of his old saints travelling about from country to country, on errands of benevolence: as different as a soldier in a marching regiment is from being one of the seven champions."