Dispatch to the Cincinnati Gazette. iiixiif^Tos, Ky„ March 30. MiHUwy maters in thja Department are being pitthed forWari wftb great' energy.— Goo. Gilmore commands in person. Col. Gilbert, anticipating warm work in front, turned the command of the post over to Col. Bird of the First Tennessee, who in turn surrendered it to Col. Leasure of the One Hundroth Pennsylvania, who is now cowtnandant of thi* poet, and hurried to the front.The only^daogef now feared In Lexington Is from wandering bands of Oluke’s marauders. One hnndred and fifty of them were reported near Richmond. A few wore captured by Walker’s men, whilst crossing the Kentucky on Saturday. His command still hovers about Owiugsville.— Nothing heard from Marshall.The grand invasion so extensively intended, has dwindled down to a cattle and horse-stealing raid. Pegr3m fled at the approach of Gilmore, carrying off cattle variously estimated from 1,000 to 2,000. He loft Stanford Friday night, hotly pu^ued by Wool ford was twelve hours behind.— Our infantry are following to-day. It is reported that the rebelsjwere so closely pressed that they abandoned all tbo cattle and trains, which, with 225 men. were captured by Wool ford’a advance. About 75parolled men of ibe 104th Ohio, captured at Stanford; the 18ib Michigan, captured at Dick Robinson; the 44th Ohio* 45th Ohio and10th Kentucky cavalry, captured on picket, came in yesterday. The rumor lhat Morgan had crossed the Cumberland and was marching oo Staoford is not credited.The whereabouts of Marshall is still a myth. That wiley Falstaff finrt ing the climate unwholesome, has no doubt imitated bis ponderous prototype and found discretion the better part of valor. The prospect of a battle diminishes unless Gen. Gilmore overtakes Pegram before be reaches ibe Cumberland. The war cry is onward southward, and Keniuckv and Tennessee about ■ •*for joy at the coming relief.Specil