Which preposition to use with echelons

during Occurrences 1%

We arrived at Hazelar on a Saturday evening, and collected our echelons during the night.

of Occurrences 1%

' The plan announced in the celebrated memorandum of 9th October 1805 indicated, for the attack from to windward, that the British fleet, in what would be called on shore an echelon of two main divisions and an 'advance squadron,' would move against an enemy assumed to be in single line-ahead.

on Occurrences 1%

Hillthe four divisions keeping in communication with each other, and moving in echelon on separate roads, if practicable; the left division in advance, with skirmishers and sharp-shooters extending in their front, will sweep down the Chickahominy and endeavor to drive the enemy from his position above New Bridge; General Jackson, bearing well to his left, turning Beaver Dam Creek, and taking the direction toward Cold Harbor.

Which preposition to use with  echelons