Editing Grimdark Future/Tactics (section)

===Morale===
Whenever a unit is either reduced to half-strength (either by models or by Tough wounds) or the loser in melee, they need to test morale. This is, again, dependent on a quality check.

If the unit fails this check, then the unit is is pinned (if the test was made outside of melee or if they are in melee but still above that half-wound count), making them only able to hit in melee on a nat 6 until they waste an entire turn doing nothing to remove the status, or routed and destroyed (if they were in melee and are below half-strength).