Synonyms for Bivouac (same or very similar meaning)
WordNet sense 1 (a site where people on holiday can pitch a tent):
campground, campsite, encampment, camping area, camping ground, camping siteWordNet sense 2 (temporary living quarters specially built by the army for soldiers):
camp, cantonmentWordNet sense 3 (live in or as if in a tent):
encamp, tent, camp outFrom the ODE community, based on WordNetadd/edit