Thanks for the reply. This was prior to starting a career.
I always create or change the stock careers, adding campaigns to stretch them out. So for instance, the stock Stuka career has a big gap between Crimea 41 and 42, a gap of several months, so I add the Moscow campaign between them which fills the gap nicely.
Obviously the stock career starts in 1941 with Lvov, so my question was can I add the campaigns prior to this which are in the DCG careers, Poland, France, BoB etc to the start of my campaign and/or add parts of my career to the DCG ones?