Modern fields of battle are much more extended than those of the ancients, whence it becomes necessary to study operations on a large scale.

A much greater degree of experience and military genius is requisite for the direction of a modern army than was necessary for an ancient one." Figure 9 represents a camp (on favorable ground) of a grand-division of an army, composed of two brigades or twelve battalions of infantry, twelve squadrons of cavalry, five batteries of artillery, and three companies of engineers.
Figure 10 represents the details of a camp of a battalion of infantry composed of eight companies.
Figure 11 is the camp of a squadron of cavalry.
Figure 12 is the camp of two batteries of foot artillery, or two companies of foot engineers.
Figure 13 is the camp of two batteries of mounted artillery, or two companies of mounted sappers and pontoniers.
On undulating or broken ground the arrangement and order of the general camp, as well as the details of the encampment of each arm, would admit of much variation.[8] [Footnote 8: There are many valuable remarks on the various subjects comprised under the head of logistics, in the works of Jomini, Grimoard, Thiebault, Boutourlin, Guibert, Laroche Amyon, Bousmard, Ternay, Vauchelle, Odier, Audouin, Bardin, Chemevrieres, Daznan, Ballyet, Dremaux, Dupre d'Aulnay, Morin, and in the published regulations and orders of the English army.].