Desperate Breakout Pt 1

Use this stratagem in your Movement phase.
Select one unit from your army that has not been
selected to move this phase and which is in
engagement Range with at least one enemy unit.
Roll one D6 for each model in that unit; for each
result of 1, one model in that unit of your choice
is destroyed. Assuming that unit was not
destroyed, it can now attempt to Fall Back, and
when doing so its models can be moved
across enemy models as if they were not there.