The First Civil War didn't start in 1640 (but rather January 1642), and it was more or less over by 1646 - and the latter part of that was mostly sieges. That's four years of heavy action, and neither side had the titanic advantages that the Federals had in the American Civil War.
The other conflicts you seem to be conflating into the First Civil War occurred in Ireland and Scotland too, and the resumption of civil war in England was due to different (but connected) reasons from the First Civil War.
The other conflicts you seem to be conflating into the First Civil War occurred in Ireland and Scotland too, and the resumption of civil war in England was due to different (but connected) reasons from the First Civil War.