Huntsville, Friday, May 6. A warm and active day for all. Guard house put up. Harness racks, a shade over the horses of brush and evergreens, oven, cook house, and mess tables to be built, bringing all on duty. Was put on duty with but four hours of rest from guard. Have been on detail for five days in rotation, but it is not hard work that we have to do, and many hands make light work. 4th Minnesota returned from home on evening train, relieves 17th Iowa. Too busy to be lonesome.