Distances
A verst is a Russian unit of distance, slightly greater than a kilometre.
Dates
During the nineteenth century, Russians based their dates on the old Julian Calendar, which in 1812 was twelve days behind the Gregorian Calendar used in Western Europe. All dates in the text are given in the Russian form and so, for example, the Battle of Borodino is placed on 26 August, where Western history books have it on 7 September.