When the army is under arms, he assists the lieutenant general, whose orders he executes.
If the army marches to an engagement, his post is at the head of the guards of the army, until they are near enough to the enemy to rejoin their different corps; after which he retires to his own proper post; for the major generals are disposed on the order of battle as the lieutenant generals are, to whom however, they are subordinate, for the command of their divisions. The major general has one aid-de-camp and one brigade major.
Brigadier General, is the next rank to that of major general, being superior to all colonels, and having frequently a separate command.
General of a district, a general officer who has the charge and superintendance of a certain extent of country, in which troops are encamped, quartered, or cantoned. He is entitled to have three aids-de-camp and one brigade major.
He receives reports, &c. from the major general, respecting the troops in his district; reviews and inspects them, likewise orders field days of the whole, brigaded, or by separate corps, when and in what part he pleases, making the necessary reports to the war-office, commander in chief, &c.
Colonel General, an honorary title, or military rank, which is bestowed in foreign services. Thus the prince of the peace in Spain was colonel general of the Swiss guards.
Brigade major General. As England and Scotland have been divided into different districts, each district under the immediate command of a general officer, it has been found necessary, for the dispatch of business, to establish an office, which shall be solely confined to brigade duties. The first brigade major general was appointed in 1797. Since which period all orders relative to corps of officers, which are transmitted from the commander in chief to the generals of districts, pass through this channel of intermediate communication.
By the British regulations, it is particularly directed, that all general officers commanding brigades, shall very minutely inspect the internal œconomy and discipline of the several regiments under their order. They are frequently to visit the hospitals and guards. On arriving in camp they are never to leave their brigades till the tents are pitched, and the guards posted; they must always encamp with their brigades, unless quarters can be procured for them immediately in the vicinity of their camp. General officers must not at any time change the quarters assigned them, without leave from head quarters.
All general officers should make themselves acquainted, as soon as possible, with the situation of the country near the camp, with the roads, passes, bridges, &c. leading to it; and likewise with the out-posts, that in case they should be ordered suddenly to sustain, or defend any post, they may be able to march without waiting for guides, and be competent, from a topographical knowlege of the country, to form the best disposition for the service. They should instruct their aids-de-camp in these particulars, and always require their attendance when they visit the out-posts.
All general officers, and others in considerable command, must make themselves thoroughly acquainted with the nature of the country, the quality of the roads, every circuitous access through vallies or openings, the relative height of the neighboring hills, and the course of rivers, which are to be found within the space entrusted to their care. These important objects may be attained by maps, by acquired local information, and by unremitting activity and observation. And if it should ever be the fate of a country, to act upon the defensive, a full and accurate possession of all its fastnesses, &c. must give each general officer a decided advantage over the commanding officer of an enemy, who cannot have examined the ground upon which he may be reduced to fight, and must be embarrassed in every forward movement that he makes. Although guides may serve, and ought always to be used in the common operations of marches, there are occasions where the eye and intelligence of the principal officers must determine the movements of troops, and enable them to seize and improve every advantage that occurs as the enemy approaches.