This is a bug in the game while playing as a russian in
a campaign: start playing the game and while the computer
is playing press M to get the menu, choose file, and save.
(here is the most important part - it will not be easy since
the AI will be attacking you, but it is possible to do while
the AI is moving his units) After saving, hit CTRL+ALT+DEL
and close the game. (You have to do it also a few times to
exit) Now relaunch the game, open your save game, and you
will get a German player turn but YOU will be playing instead
of him. You should be able to move the previously viewed units.
Try to exhaust their moving points and get closer to you or
exposed for you units or make them assault 1 by 1 a group of
tanks of yours to get eliminated.
When you finish pass the turn and the AI will continue as
usual and give you the turn.