| They were built as a system of separate fortresses, abatis lines, and on forested terrain, tree blowdowns. |
| He got his smashed with a bullet comin' through the abatis, and's bin mournin' about 'em ever since. |
| There were still labourers out there, struggling to manoeuvre an abatis into position. |
| To improve their position the Americans felled trees and improvised an abatis. |
| Union soldiers completed digging a series of ditches that zigzagged forward and reached the abatis. |
| The Rebels tore away their own abatis, and in less than a minute were inside the fort. |
