"And when he had opened
the second seal, I heard the
second beast say, Come
and see.
And there went out another
horse that was red: and
power was given to him
that sat thereon to take
peace from the earth, and t
hat they should kill one
another: and there was given
unto him a great sword."
Revelation 6:3-4

The rider of the red horse takes peace from the
earth. The white horse takes authority peacefully
by politics. The red horse takes authority by war.

The first two horsemen are continuous, but are
not during the same time period.