Company 3 Officers, 128 men (in 2 Platoons). Battalion 4 Companies, under a Major. Regiment 3 Battalions, or 1,600 men, under a Colonel. Brigade 3 Regiments, or 4,800 men. Division 3 Brigades. Army Corps 3 Divisions. CAVALRY Troop 3 Officers, 100 men (in 4 Platoons). Squadron 4 Troops, 400 men, under a Major. Regiment 3 Squadrons, or 1,200 men, under a Colonel. ARTILLERY Battery 4 guns, 4 Officers, 160 men. Battalion 3 Batteries, under a Major. Regiment 2 Battalions, under a Colonel. CHAPTER XIV COMPOSITION OF NATIONAL ARMIES It may be of interest to glance at the strength of the Forces which the chief military nations will put into the field at the outbreak of war. The strength depends essentially on the number of organized Formations of Troops. It would be quite erroneous to estimate it by the total number of individual soldiers which the nation is estimated to possess. Large numbers of untrained men, without organization to embody them in, add little to actual military strength. ARMIES OF FIRST LINE The Army which will take the field at the outbreak of war is the Regular Army, which is organized, kept up, and trained, year by year, in peace. The War Army will be this Peace Army _mobilized_, or brought up to war strength and completed in every essential, by calling up reserve officers and men to fill its ranks. The Force thus produced is the “Army of First Line,” and its strength is measured by the number of the main Sub-Commands (Army Corps or Divisions) which the peace organization indicates that it is intended to form on mobilization. The men in its ranks are from 20 to 30 years of age. The Army will, on mobilization, form large _depôts_ for all its units, on which to draw for reinforcements. ARMIES OF SECOND LINE (RESERVE OR TERRITORIAL ARMIES) Most nations will also mobilize an “Army of Second Line,” mainly composed of Reserve Divisions of Infantry. Some of these Divisions may be inserted in the Army Corps of the First-Line Force, as in France and Austria; others may be added independently to some of the Armies, as in the German Army in 1866 and 1870; in some cases they may be formed into a separate Reserve Army, either for support of the Armies in the Field, or for special operations in a separate theatre. The main work, however, of the “Second-Line” Force will be to defend the Lines of Communication, and provide troops for Sieges, for Garrisons, and for Coast Defence. It will also have to guard the railways at home, keep order in the cities, guard frontiers, and take charge of prisoners. Germany provides an Army of Third Line, called the Landwehr or Home Defence Army, for the latter purposes.