June 21.— Rosengarten relieved me as officer of the day this evening. The weather has been cloudy and rainy most of the day. We sent a regiment (7th Indiana) down to Frying-Pan, to capture guerillas, etc. A detachment came back this evening with seven citizens or bushwhackers. We found out to-day that our guide was captured at Coleman’s house yesterday. Coleman lives about two miles from here, and as he had a lot of forage, our guide and quartermaster’s clerk went there for it, and were caught by a Secesh there, said to be Mosby.