MONROE — A Janesville man has been sentenced to two years in prison and two years on extended supervision for dragging a woman through a campfire and stomping on her face at a Brodhead campground in 2017.

Derrick D. Dallmann, 30, pleaded no contest Nov. 6 in Green County Circuit Court to the Class I felony charge of substantial battery.

The case led to probation revocations, and more prison time, from prior felony convictions of child abuse and cocaine dealing in Rock County. Dallman is being held at a state prison for men in Chippewa County and has an anticipated release date of 2026, with supervision extending until 2033.

A third-degree sexual assault charge was dismissed from the campground beating case.

District Attorney Craig Nolen said he dropped the sexual assault charge, related to Dallmann reportedly urinating on the woman, because he wasn’t sure he could prove a key element — that the urination was for sexual humiliation or degradation.

“I don’t think he was doing it for sexual purposes,” Nolen said.

The case otherwise had solid evidence, he added.

“We picked him up walking along the road (from the campground). ... The shoes he was wearing matched an imprint on the victim’s forehead,” Nolen said.

According to police reports, Dallmann was camping with the woman at the Sweet Minihaha Campground on June 3, 2017, when they got into argument over her phone.

During the course of the argument, Dallmann, who had been drinking, grabbed the woman by the legs, pulled her from her camp chair and then dragged her through their campfire before stomping on her head with steel-toed boots, briefly knocking her unconscious.

The assault was interrupted by fellow campers, who separated the two. When the woman came to, she sought assistance from other campers but nobody helped, so she returned to her campsite to sleep. 

She later told police she was then awakened by Dallmann urinating on her. She fled again and was this time able to leave the campground when another camper offered her a ride.

The woman sustained head injuries and second- and third-degree burns to her hands and arms, some of which required skin grafts. Dallmann was apprehended while walking toward Brodhead on Wisconsin 11. Before being jailed, he was taken to a Rock County hospital to be treated for dehydration.

Nolen said the victim has recovered from her injuries and pulled her life together impressively in the past two years after a period of criminal activity.

“She’s much better today,” he said.