Sentence:  There is left round about the circuit of the whole quarter, a "parallell" on all sides some 200, or 250 foote betweene the front of the quarter and the trench, called an "Alarme Place," for the souldiers to draw out into Armes, into <WSD>"Parade</WSD>," or when any "Alarme" or commotion happens ... 
Meaning of the word marked with <WSD> tags:  An assembling of troops for inspection or to receive orders.<ref>(Edward Phillips), "(The New World of English Words)," London: Nath. Brooke, 1658: “"Parade," (French) a Term in Military Discipline, being an appearance of Souldiers at a set time to receive Orders; also any great preparation, or appearance.”[http://name.umdl.umich.edu/A54746.0001.001]</ref>