GENERAL ORDERS, No. 42. WAR DEPARTMENT, Adjutant General’s Office, Washington, April 18, 1862. 1.. By direction of the President, Brigade Surgeon J. II. Thompson, United States Volunteers, is hereby dismissed the service as an alarmist, on the recommendation of his Commanding General, Major General Burnside. 11.. 0. the recommendation of Brigadier General Sumner, com- manding Second Army Corps, approved by Major General McClellan, commanding the Army of the Potomac, Major Von Steinhaus, Captain Bctticher, and Captain Camp, 68th Begiment of New York Volunteers ; Lieutenant Lombard, Battalion Adjutant 8th Illinois Cavalry ; and Assistant Surgeon Williams, 1st New York Artillery, are, by direction of the President, stricken from the rolls of the Army, for berng captured by the enemy while straggling without authority beyond the outposts of the Army, March 29, 1862. 111.. The headquarters of Lieutenant Colonel William Hoffman, 8th Infantry, Commissary General of Prisoners, is transferred from New York city to Detroit, Michigan. IV.-The attention of officers empowered bylaw to assemble Gen- eral Courts Martial is directed to the Regulations, paragraphs 896 and 897, relative to forwarding the proceedings of such Courts, with their action endorsed on each case, and a copy of the order promulgating the proceedings, promptly, to the Judge Advocate of the Army, at Washington. Much embarrassment is occasioned to the War Depart- ment by failure to comply with these Regulations, which must be at once remedied wherever they have been neglected. By order of the Secretary of War : L. THOMAS, Adjutant General. Official : Assistant Adjutant General.