The Collaborative International Dictionary
Marching \March"ing\, a. & n., fr. March, v. Marching money (Mil.), the additional pay of officer or soldier when his regiment is marching. In marching order (Mil.), equipped for a march. Marching regiment. (Mil.)
A regiment in active service.
In England, a regiment liable to be ordered into other quarters, at home or abroad; a regiment of the line.
Usage examples of "in marching order".
Captain Fulk had the ranks set in marching order, and as soon as the prince arrived, he made his report.
The Scotsmen had apparently arrived in marching order, three abreast, and were maintaining their positions.
The greatest peril for an army on the move is to be caught in marching order by an enemy who is already formed for battle.
And the dawn of the second day saw them in marching order, their scanty belongings in packs, their faces set toward the unknown lands of the south.