How did Cromwell’s warriors address each other and their commander? Why is it so?

The soldiers of Cromwell called each other brother, and their officers were called brother colonel, brother general – so it is customary among members of one religious sect.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.