eon, 278.
formation by, when preferable, 286.
organization of, 279, 280.
system of, 278.

Doctoroff, warning given to, in 1812, by Seslawin, 273.

Double line of operations, when applicable, 117.
when necessary, 116.
lines of operations, 102, 110.
when advantageous, 123.
lines to be avoided, 330.
passages of rivers, 230.
strategic front, 95.
wars, 36.
wars of Napoleon, 37.

Dragoons, 308.
concentration of, by Emperor
Nicholas, 309.

Drepanum, 363.

Dresden, 305.
intrenched camp at, 155, 211.
Napoleon's order of battle at, 198.
victory at, 124.

Drissa, camp of, 155, 157.

Divergent lines, when advantageous, 118.
operations, 126.
retreats, when admissible, 239.

Diversions, 218.
instances of, 218.
when useful, 218.

E.

Eccentric lines, 237.
retreat. Bulow's use of the term,
237.

Eccentric system, 126.

Echelon, order of battle by, 193.

Echelons, order in, 193.
squares in, 297.

Ecnomos, victory of, 363.

Edward III. of England, 376.

Egypt, expedition of John of Brienne against, 374.

Ehrenbreitstein, 158.

Elchingen, Ney at, 182.

Elective governments, weakness of, 46.

Elevated points, advantage of, for observation, 276.

Elongated squares, 296, 297.

Employment of artillery, 315-318.

Encounters of cavalry against cavalry, 311.

Enemy, bodies of, near line of operations, 67.
contempt for, 63.
how dislodged, 188.
how to drive from his position, 201, 202.
should not be paid to leave a country, 242.

Enemy's movements, importance of knowing, 268.

England controls the sea, 173.
invasion of, by Sweyn, 370.
projected invasion of, by Napoleon, 249, 250, 386.

England's attack on Washington in 1814, 385.

English and French expedition to China, 389.

English, descents of, on France, 376.
expedition against Napoleon in 1815, 385.
expedition in 1762 against Havana, 382.
maritime expeditions, 384-390.
squares at Waterloo, 294.

Enthusiasm, importance of, 41.
not military spirit, 62.

Epaminondas, 190.

Error of Napoleon in campaign of 1812, 172.

Error of the allies in 1793, 107, 108.

Errors in strategy, 91.

Essential bases of military policy, 49.

Essling, 192, 193, 200, 350.
Napoleon at, 158.
Napoleon's order of battle at, 198.
order of battle at, 192, 193.

Eugene at Turin, 153.
march of, 141.

Eventual bases, 84.
lines of defense, 96.

Expediency, wars of,