Yael

True to Deborah’s message from God to Barak because he asked Deborah to go with him to war against Sisera.
Barak did not get the glory of killing Sisera.
God used a woman to kill Sisera and that woman’s name was Yael.
She gave him some milk and said go to sleep.
After he was asleep she killed him with a tent peg.

Background reading:

Yael

But Ja’el the wife of Heber took a tent peg, and took a hammer in her hand, and went softly to him and drove the peg into his temple, till it went down into the ground, as he was lying fast asleep from weariness. So he died.
Judges 4:21