The warrior may leap D6” in the movement phase in addition to his normal movement. He may move and leap, run and leap, or charge and leap, but he can only leap once per turn.
A leaping warrior may jump over opposing man-sized models, including enemies, and obstacles 1” high, without penalty.
The leap may also be used to leap over gaps, but in this case you must commit the warrior to making the leap before rolling the dice to see how far he jumps. If he fails to make it all the way across, he falls through the gap (see falling).