To understand in what this dependence consists it is necessary to reinstate another omitted condition of every command proceeding not from the Deity but from a man, which is, that the man who gives the command himself takes part in the event.

This relation of the commander to those he commands is just what is called power. This relation consists in the following:

For common action people always unite in certain combinations, in which regardless of the difference of the aims set for the common action, the relation between those taking part in it is always the same.

Men uniting in these combinations always assume such relations toward one another that the larger number take a more direct share, and the smaller number a less direct share, in the collective action for which they have combined.

Of all the combinations in which men unite for collective action one of the most striking and definite examples is an army.