It is sometimes argued that 1639 marked the end of any meaningful Scottish contribution to the Thirty Years' War as this year saw the departure of so many veterans from European armies to participate in the British Civil Wars. However, there was never a moment in the ‘German wars’ that did not see active Scottish regiments and commanders still based on the Continent. The most visible of these were the regiments of the Scots-Dutch Brigade and those in the French army, largely because they were flagged as Scottish units. Detecting the Scottish presence within the Swedish army is more problematic, given the steady integration of Scots throughout Swedish and German regiments. As noted in Chapter 5, a condition of the release of Alexander Leslie and his cohort in the 1638–40 period was that many Scottish officers were required to stay in Swedish service. Nevertheless, the sudden removal of so many of their comrades necessitated a reorganization of those remaining behind, in addition to finding replacements for those who had left.