Units use their Leadership characteristic for taking Morale checks. This represents the grit, determination, élan or (sometimes) plain stupidity of warriors in action. Morale checks are taken by rolling 2D6 and comparing the total score to the unit's Leadership value. If the score is equal to or under the unit's Leadership value the test is passed, if it is higher the test is failed.
Errata — Chapter Approved: Main Rules Clarifications (v2.0): Morale, Pinning and Regrouping are all Leadership tests. Psychic tests are different, and do not count as Ld tests as far as the rules are concerned.