Units in close combat automatically fail their Break test if they are defeated by an enemy that they Fear and the combined unit strength of the units on the losing side is lower than the combined unit strength of all Fear-causing enemy units on the winning side.
Note that an act of Insane Courage will keep such units in the fight though, so it is worth rolling the dice in the hope of a double 1!
If the Fear-causing enemy units do not have a higher unit strength, Break tests are taken as normal. See the Close Combat section for details of combat results, Break tests and fleeing troops. Note that this rule applies whether the defeated units have previously passed any Fear tests or not.