Combined stance? When do I get it?

[Psyker3]

ok very basic and probably stupid question but I keep hearing about this combined stance and as of lvl 40 I just don't have it yet.  I have lava and the defensive one.    Never seen a combined stance line.  Anyone? <div></div>

[Jezekie]

<div></div><p><font face="Arial, sans-serif"><font size="2">44 - Fire Stance (This stance combines some elements from the bruiser's primary offensive and defensive stances, granting increased physical mitigation, deflection and offense skill, and a chance to deal heat damage with every successful melee hit. Fighting unarmed significantly increases the amount of heat damage inflicted.)</font></font></p><div></div>