Group Movement

[Spud]

Guys,
 
Advice needed here.
 
Am playing Smolensk as the Germans.
 
I have inadvertently activated a group move and ordered the corps troops – artillery, engineers etc – from the 47th Panzer Corps to move as a group to area of the map they don’t need to be moving to.
 
I hit end turn and the units in question that have movements points simply move backwards.
 
I’ve obviously hit a combination of keys here accidently. A big red arrow appeared in the map three turns ago.
 
How does one cancel an errant group move?
 
Thanks.
 
Gavin.