"Eliminating Entrenchments"

[Dan Storm]

Good Evening All;

This is more of a Scenario Victory Condition Question rather than a rules explanation question.

Afrika Korps / Scenario 3 / Bardia Breakin.

"The Australian Player wins if at the end of play all Italian Entrenchments have been eliminated..."

Can someone please let me know the procedure for eliminating an entrenchment?

The TEC and the scenario book cover the method for removing Anti Tank Ditches - but I cannot seem to find mention of entrenchment elimination.

Thank You!