grades now in service are not more than are required for their
respective commands; but further legislative action during your present
session will, in my judgment, be required, and to which it is my duty
respectfully to invite your attention.

Should the war, contrary to my earnest desire, be protracted to the
close of the term of service of the volunteers now in Mexico, who
engaged for twelve months, an additional volunteer force will probably
become necessary to supply their place. Many of the volunteers now
serving in Mexico, it is not doubted, will cheerfully engage at the
conclusion of their present term to serve during the war. They would
constitute a more efficient force than could be speedily obtained by
accepting the services of any new corps who might offer their services.
They would have the advantage of the experience and discipline of a
year's service, and will have become accustomed to the climate and be
in less danger than new levies of suffering from the diseases of the
country. I recommend, therefore, that authority be given to accept the
services of such of the volunteers now in Mexico as the state of the
public service may require, and who may at the termination of their
present term voluntarily engage to serve during the war with Mexico,
and that provision be made for commissioning the officers. Should
this measure receive the favorable consideration of Congress, it is
recommended that a bounty be granted to them upon their voluntarily
extending their term of service. This would not only be due to these
gallant men, but it would be economy to the Government, because if
discharged at the end of the twelve months the Government would be bound
to incur a heavy expense in bringing them back to their homes and in
sending to the seat of war new corps of fresh troops to supply their
place.