During the English Civil War red dyes were imported in large quantities for use by units and individuals of both sides, though this was the beginning of the trend for long overcoats. The ready availability of red pigment made it popular for military clothing, and the dying process required for red involved only one stage.
The English Civil War saw a significant influx of crimson dyes being imported by both sides, which ultimately led to the widespread adoption of long overcoats. This was largely due to the ease with which red pigment could be obtained, making it an attractive option for military clothing, and the one-stage dying process.