rear-guard, 236.
hours of departures and halts in, 236.
in daylight, 231.
instances of famous, 233.
measures to insure success of, 242, 243.
parallel, countries adapted to, 240, 241.
parallel, when preferable, 239.
passage of rivers in, 243, 244.
Prince de Ligne's remark on, 230.
rear-guard in, 234, 243.
should be slow, 232.
various kinds of, 231.

Reverse fire, 317.

Rhine, passages of, 120, 224, 226.

Rhodes, capture of, by the Turks, 377.

Richard Coeur-de-Lion, 373.

Richelieu, expedition of, against Minorca, 382.

River, best position for passage of, 226.
crossing of, in presence of an enemy, 120.
order of battle at passage of, 192.

Rivers as eventual lines of defense, 96.
as frontiers, 147.
as lines of operations, 76.
double passage of, 230.
famous modern passages of, 226.
passage of, 224, 343.
passage of, in retreats, 243, 244.
rules for, 245.
points of passage of, in presence of an enemy, 121.
rules for passage of, 227.
rules for preventing passage of, 228.

Rivoli 179, 205.
Napoleon's order of battle at, 198.

Rocket-batteries, use of, 318.

Rollo, 369.

Roman legions, cause of the ruin of, 63.
nation, cause of the decline of, 60.

Romans, naval expeditions of, 363.

Rome, military institutions of, 61.

Rossbach, 207.

Ruler, a, should be able to arrange plans of operations, 328.

Rules for conducting descents, 251.
for fighting battles scientifically, 203.
for gaining information of enemy's movements, 273, 274.
for offensive or defensive operations, 185.
for passage of rivers, 227.
for passage of a river in retreat, 245.
for pursuit, 242.
for preventing passage of rivers, 228.
for use of artillery in battle, 316-318.
to be observed in selecting tactical positions, 181.

Russian army, firmness of, in retreats, 64.
army, skirmishers in, 293.
base in 1828 and 1829, 84.
cavalry, 314.
expeditions in 1809, 385.
order at Eylau, 295.
retreat in 1812, 233.
system of forming columns, 294.

Russians, early maritime expeditions of, 368, 369.

S.

Saber, when best for cavalry, 308.
when useful, 306.

Saint-Bernard, Napoleon's passage of, 168.

Saint-Cyr at Stockach, 205.

Saxons, expedition of, 367.

Saxony, Napoleon's central lines in, in 1813, 124.

Savoy, Duke of, 22.

Scandinavians, 366.

Science of marches, essential point in, 139.
of marches, includes what, 138.

Sc