Two Waikato women stepped in and stopped a man who was kicking his partner in the head on a Ngaruawahia street on Sunday night.
Police say the pair deserve formal recognition for their efforts.
The women, aged 18 and 22, were on their way home from church in Ngaruawahia when they noticed what they thought was two men fighting.
"What particularly concerned the women about the incident was that the protagonists were very nearly run over by a truck while the struggle continued outside Ngaruawahia's Delta Tavern," said Senior Sergeant Rupert Friend.
"It wasn't until the women pulled over and got out of their car that they realised it wasn't two men having a scrap but a middle aged male attacking his female partner."