These they cut away, and pushed on through.

The other troops then came up, Pennypacker's following Curtis, and Bell, who commanded the 3d brigade of Ames's division, following Pennypacker.

But the fort was not yet captured though the parapet was gained.
The works were very extensive.

The large parapet around the work would have been but very little protection to those inside except when they were close up under it.

Traverses had, therefore, been run until really the work was a succession of small forts enclosed by a large one.