WAR DEPARTMENT, _March 13, 1862_. Major-General GEORGE B. MCCLELLAN: The President, having considered the plan of operations agreed upon by yourself and the commanders of army corps, makes no objection to the same, but gives the following directions as to its execution: 1. Leave such force at Manassas Junction as shall make it entirely certain that the enemy shall not repossess himself of that position and line of communication. 2. Leave Washington entirely secure. 3. Move the remainder of the force down the Potomac, choosing a new base at Fortress Monroe, or anywhere between here and there, or, at all events, move such remainder of the army at once in pursuit of the enemy by some route. EDWIN M. STANTON, _Secretary of War_. [From the Daily National Intelligencer, March 28, 1862.] NAVY DEPARTMENT, _March 15, 1862_. Lieutenant JOHN L. WORDEN, United States Navy, _Commanding United States Steamer Monitor, Washington_. SIR: The naval action which took place on the 10th instant between the _Monitor_ and _Merrimac_ at Hampton Roads, when your vessel, with two guns, engaged a powerful armored steamer of at least eight guns, and after a few hours' conflict repelled her formidable antagonist, has excited general admiration and received the applause of the whole country. The President directs me, while earnestly and deeply sympathizing with you in the injuries which you have sustained, but which it is believed are but temporary, to thank you and your command for the heroism you have displayed and the great service you have rendered. The action of the 10th and the performance, power, and capabilities of the _Monitor_ must effect a radical change in naval warfare. Flag-Officer Goldsborough, in your absence, will be furnished by the Department with a copy of this letter of thanks and instructed to cause it to be read to the officers and crew of the _Monitor_. I am, very respectfully, your obedient servant, GIDEON WELLES. WAR DEPARTMENT, _Washington, D.C., April 5, 1862_. Major-General JOHN A. DIX: _Ordered_, That Major-General John A. Dix, commanding at Baltimore, be, and he is, authorized and empowered at his discretion-- First. To assume and exercise control over the police of the city of Baltimore; to supersede and remove the civil police or any part thereof and establish a military police in said city. Second. To arrest and imprison disloyal persons, declare martial law, and suspend the writ of _habeas corpus_ in the city of Baltimore or any part of his command, and to exercise and perform all military power, function, and authority that he may deem proper for the safety of his command or to secure obedience and respect to the authority and Government of the United States. By order of the President: EDWIN M. STANTON, _Secretary of War_. [From the Daily National Intelligencer, May 17, 1862.]