Isolation question

[ComradeP]

At the start of Soviet turn 11, the engineer unit that blew up the bridge on Soviet turn 10 provided supply to the units on the other side of the river.

The engineer unit moved elsewhere during Soviet turn 11.

At the start of Axis turn 12, there is no new >Soviet< supply check, so the situation at the start of Soviet turn 11 is used. The two units are in supply.

At the start of Soviet turn 12, no supply can be traced to the two units. They are Isolated.

At the start of Axis turn 13, you can see that new situation.