Tau Supporting Fire
When an enemy unit declares a charge, all friendly models with this special rule in units within 6" of the charging unit's target can choose to fire overwatch as if they were also targets of the charge.
By Chris Vinton
Support fire is a unique rule to the Tau Empire. This rule highlights the old saying "the best defense is a strong offense." If your list depends on this rule to win games your deployment is crucial. Layers of units and exact deployment both make and break this tactic.