GENERAL ORDERS, No. 126. WAR DEPARTMENT, Adjutant General’s Office, Washington, March 29, 1864. The following officers are announced as of the staff of Lieutenant General Grant : Lieutenant Colonel C. B. Comstock, senior Aide-de-Camp, with the rank of Lieutenant Colonel. Lieutenant Colonel O. E. Babcock, and Major F. T. Dent, 4th U. S. Infantry, Aides-de-Camp, with the rank of Lieutenant Colonel. Lieutenant Colonel W. L. Duff, 2d Illinois Artillery, Assistant Inspector General. Major W. E. Eowley, A. D. C., and Captain Adam Badeau, Additional Aide-de-Camp, Private Secretaries, with the rank of Lieu- tenant Colonel. order of the Secretary of War: E. D. TOWNSEND, Assistant Adjutant General. Official : Assistant Adjutant Genera\t