On the 9th of January, 1799, His Majesty was pleased to appoint Colonel CALVERT to the important situation of ADJUTANT-GENERAL TO THE FORCES, in which capacity he was enabled to perform important and valuable services to the crown and to the country, during one of the most eventful periods in the history of Great Britain. In August, 1800 he was nominated to the colonelcy of the Fifth West India regiment; in 1803 he was promoted to the rank of major-general; in 1806 he was removed to the FOURTEENTH Foot, and in 1810 he was advanced to the rank of lieutenant-general. At the period of his appointment to the high and important station of Adjutant-General of the Forces, the want of efficient regulations, and of an adherence to a system founded on principles calculated to promote the advantage of every branch of service, was felt by all persons called upon to take a part in the concerns of the army, and serious inconvenience was experienced from the absence of such a system by His Royal Highness the Duke of York, who, at two different periods, had to contend against powerful continental armies, with troops, though eminently brave, and endued with the true spirit of their profession, yet not formed upon sound general principles of discipline. His Royal Highness, being appointed Commander-in-Chief, applied himself with great diligence to the correction of abuses, and to the improvement of the condition of the army in every particular: and his efforts, which were honoured with the encouragement and approbation of His Majesty, were ably seconded by his staff officers, who were judiciously selected to carry his views into effect; the ultimate accomplishment of these objects reflected the highest credit on those who planned, and on those who executed measures which have conduced to the safety and glory of the United Kingdom and of its numerous colonial possessions. Among these officers, SIR HARRY CALVERT held a distinguished station. As Adjutant-General, the discipline, equipment, and efficiency of the army came under his superintendence, and to improve and perfect these, he devoted his best energies and unwearied attention. The general orders of the army, in the successive editions which were brought forward from the year 1799, afford abundant proofs of the value of his labours, in the numerous and excellent regulations made from time to time for the better government of the army. In the _clothing_, _messing_, _equipment_, and every other branch of the interior economy, improvements were introduced to promote the health and comfort of the soldier, and the efficiency of corps; and the establishment of _confidential inspection reports_ facilitated the accomplishment of these objects, by furnishing the Commander-in-Chief, and the authorities under him, with the means of forming a correct judgment of the state of each corps in all its details,--of correcting what was wrong,--of supplying what was deficient, and of ascertaining the merits