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INDEX.

Aircraft, present numerical weakness, §§ 1, 85; comparison with cavalry Arm, § 1; directing artillery fire, §§ 1, 10; in cooperation with cavalry, § 9; methods of signalling, § 10; differentiation of type, § 10; attack by rifle and gun-fire, § 11; protection by armour, § 12; offensive against cavalry, § 18; in the service of the Navy, § 69; as affecting attack and defence in combined tactics, § 87; in naval reconnaissance, relative advantages of aeroplane and dirigible, § 78; general influence on combined tactics, § 86; aeroplane bases at high altitude, § 100; landing in neutral territory, § 105; estimate of future numerical strength, § 106; merits of British machines discussed, § 108; for directing gun-fire in naval warfare, § 115; as countering submarine activity, §§ 74, 76, 118; strategic employment on large scale, § 119; see also Aeroplane.
Airship, see Dirigible.
Altitude, in reconnaissance work, §§ 9, 12; as effective against small arms fire, §§ 11, 12; difficulty of hitting aircraft by rifle or gun-fire as due to, § 11; meaning of term high altitude, definition, § 12; tactical value of, § 55, 93, 100; bases at high altitude, importance of, § 100; low altitude flying, § 13 et seq.
Amphibious Type of Aeroplane, utility of, § 81.
Armament, miscellaneous weapons, § 64 et seq.; the machine gun, §§ 15, 47, 48, 53; one-pounder, § 46; light weight shell, § 63; the bomb, §§ 64, 65; supremacy of the gun, § 68; treaty restrictions as affecting, § 45; in its relation to armour, § 54; of naval type, § 71.
Armour, and Altitude, § 12; as defence against attack from below, § 12; thickness of, § 12; penetrative power of different weapons, § 12; for low altitude and point blank range, § 14; in its relation to armament, § 54; pros and cons, § 56; and shield a distinction, § 57.
Artillery, direction of fire by aircraft, §§ 1, 10, 115; counter-aircraft, difficulties pertaining to, § 11.
Attack, from below by gun-fire, § 11; by aeroplane on other arms of the service, § 15; aeroplane on aeroplane, § 43; from above, § 56; attack and defence, balance between strategic and tactical advantages, § 86; by bomb, § § 64, 65; on submarine, § 75; general on communications, § 119; on London or capital city, § 121 et seq.

B

Ballistics, the energy account, § 58.
'Balloon, see Dirigible.

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