Assertion: barge | /r/ObjectUse | used for first echelon
Facets:
Source sentences:
text: The barges used for the first echelon would be retrieved by tugs on the afternoon of S-tag, and those still in working order would be drawn up alongside the transport vessels to trans-ship the second echelon overnight, so that much of the second echelon and third echelon could land on S plus one, with the remainder on S plus two.