...he regiment was detailed this morning to work on the trenches. We had worked about two hours, when we were ordered to form in line of battle. Cannonading was heard in the direction of Monterey. Halleck is advancing upon this place, and we may expect a great battle to-morrow or next day. Spent the afternoon washing my clothes and playing chess with Harry Cowperthwaite, of the Maynard Rifles. Repor...