H1: The wrath strike (Zornhau)

"Understand it thusly: When one cleaves-in above from
his right side, so also cleave-in a wrath-cut with him, with the
long edge strongly from your right shoulder. If he is then soft
upon the sword, so shoot-in the point forward long to his face
and threaten to stab him."

A great introductory video taking you through the basic mechanics: https://www.youtube.com/watch?v=m6hc4JdT438&t=14s 

Another is here.

A well done video here gives an alternative...the Zornhau-ort.  A defensive cut followed by a thrust as described in the source above.