The principal part of the Army has been concentrated in Florida, with a view and in the expectation of bringing the war in that Territory to a speedy close. The necessity of stripping the posts on the maritime and inland frontiers of their entire garrisons for the purpose of assembling in the field an army of less than 4,000 men would seem to indicate the necessity of increasing our regular forces; and the superior efficiency, as well as greatly diminished expense of that description of troops, recommend this measure as one of economy as well as of expediency. I refer to the report for the reasons which have induced the Secretary of War to urge the reorganization and enlargement of the staff of the Army, and of the Ordnance Corps, in which I fully concur. It is not, however, compatible with the interests of the people to maintain in time of peace a regular force adequate to the defense of our extensive frontiers. In periods of danger and alarm we must rely principally upon a well-organized militia, and some general arrangement that will render this description of force more efficient has long been a subject of anxious solicitude. It was recommended to the First Congress by General Washington, and has been since frequently brought to your notice, and recently its importance strongly urged by my immediate predecessor. The provision in the Constitution that renders it necessary to adopt a uniform system of organization for the militia throughout the United States presents an insurmountable obstacle to an efficient arrangement by the classification heretofore proposed, and I invite your attention to the plan which will be submitted by the Secretary of War, for the organization of volunteer corps and the instruction of militia officers, as more simple and practicable, if not equally advantageous, as a general arrangement of the whole militia of the United States. A moderate increase of the corps both of military and topographical engineers has been more than once recommended by my predecessor, and my conviction of the propriety, not to say necessity, of the measure, in order to enable them to perform the various and important duties imposed upon them, induces me to repeat the recommendation.