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(i) One artillery battalion, consisting of three batteries of four 3-inch antiaircraft guns each, a searchlight battery containing twelve searchlights and four sets of sound-locating apparatus, and a battalion combat train.

(ii) Three machine gun battalions, each organized like the machine gun battalion described in the case of the division, except that two of these battalions should be equipped with the 37-mm machine guns when this weapon is ready to issue.

d. (1) The army has need of antiaircraft weapons to cover army troops on the march and in bivouac, to reinforce the antiaircraft defense of the corps, and at the same time cover the various army supply establishments or other particular points whose importance warrants such protection. The army should also have available extra seachlights and sound-locating apparatus to work with the pursuit aviation in establishing airplane areas of antiaircraft defense.

(2) It is difficult to find a definite basis for an antiaircraft organization for army troops, but it is believed that a brigade composed of three regiments, each like that recommended for corps troops would be satisfactory and by no means excessive. This brigade should include, however, an extra battalion consisting of three searchlight batteries for use at the airplane areas.

e. At the outbreak of war, there should be included in the GHQ Reserve of the commander of the field forces such antiaircraft units, organized similar to those described above , as the immediate situation may appear to demand. These units will be needed in order to reinforce the antiaircraft defense of the armies and also to protect specific areas, establishments and works in the Communications Zone.

f. Units engaged in the antiaircraft defense of points in the Zone of the Interior and in harbor defenses, should be similarly organized except when modifications are desirable on account of the amount or nature of the materiel and equipment utilized.

11. COMMAND. -- a. With respect to the application of the principles of command to the units composing the antiaircraft service, it is necessary, before coming to any decision, to carefully consider:

(1) The instruments and weapons used by this service.
(2) The development of the service and its training for war.
(3) Its mission in war.
(4) Its necessities as regards command and coordination.

b. The instruments and weapons with which the antiaircraft service operates will comprise .50 caliber, machine guns, 37-mm machine guns, antiaircraft artillery of 3-inch and larger calibers, searchlights, sound-locating apparatus and such other devices as may be developed. Of these the machine guns, should be at present, greatly in the majority, which fact indicates that the term antiaircraft artillery as applied to all units is a misnomer, since it applies to but a relatively small number of the units of the service.

c. (1) At present the development of the antiaircraft service is intrusted to the coast artillery corps. This statement, however, is but partially true, since the coast artillery corps as a corps is less instrumental in the development of the antiaircraft service than are certain units of the corps which have been assigned to antiaircraft duty, and which are in fact, not coast artillery units but antiaircraft units in all except name.