 Complete the following phrase:  Charleston was principally located on a peninsula, and so Lincoln aligned his Continental units in defensive works that barricaded the neck of the peninsula, using a line of redoubts, redans, and batteries. These defensive works were connected by a parapet, and commanded from a concrete hornwork jutting out from the defensive line. In front of the fortifications, the Patriot forces dug an 18-foot-wide moat, and between the moat and parapet they constructed a line of abatis to stall any British assault. When the 