of the fact that, at the time, Russian military doctrine required the cavalry to conduct its hand-to-hand fighting with sabre or lance. (Harriman)

In 1904, Russian infantry tactics still followed 19th Century lines, and had not progressed to match the capabilities of modern weapons ... When under fire, soldiers were to run while ‘stooping’, and use terrain for cover where possible. In the attack, Russian tactics called for the use of shock effect. Troops were to  fire one rifle volley at the enemy followed by a bayonet charge. (Sisemore 2003: 71; quoted from Harriman)

Summarised here:

Bayonets
The bayonet, known as a shtik in Russian, was a socket type with a quatrefoil ground blade and a flattened, ‘screwdriver’ point. Russia was the last major power to issue a socket-bayonet for itsrifles; and the adoption of an old-fashioned socket-bayonet at a time when most other powers were looking to knife-bayonets serves to emphasize the essentially conservative nature of the Russian military. No scabbard was issued, as Russian military doctrine required the bayonet to be affixed to the rifle at all times. The Germans, Austrians and Finns recognized the impracticability of this and issued leather or rolled sheet-steel scabbards for captured bayonets.
The original M1891 bayonet had a locking ring which slipped over the front sight and then turned to the right to secure it on the barrel. There are several different slots which give the blade a different orientation to the muzzle when the blade is fixed. Those bayonets made in Wiener-Neustadt for M1891 rifles captured by the Austrians have