Neue Einheiten

Hello, I applaud your work.
Ostfront 1, 2 and 3 are perfect.
I have a question - in the past Ostfront I could enter my other units - and appeared in the game and went to buy and use.
In Ostfront 4 I again inserted, but not there.
Please help.
Georg

Maybe you are not allowed to buy units, due to the settings of the scenario ?

I made ​​three of its units and in version 4 Ostfront appears. In previous versions it was,
but the new unit does not appear in the menu of purchase.
Please help.