By day, they go by names like Bree, Megan and Bobbie. However, at night, they adopt such monikers as Dyrtie Gyrtie, Mag Pile'm Up and Madam West.

These girls are a few members of two roller derby teams in Warsaw - the Lake City Roller Dolls and the War City Derby Militia.
"We have stay-at-home moms, directors of businesses and business owners," Bree O'Callahan, a.k.a Madam West, said.

West is the coach of the War City Derby Militia, but used to coach the Roller Dolls before breaking off to form her own team in August.

While the teams may be different, the objective is the same - getting girls together for sport and community service.

"Two girls (Vicki McClure and Anna Lackey) approached me about getting together, but didn't want to knit," Bobbie Tevis, a.k.a. Dyrtie Gyrtie, the treasurer of the Roller Dolls said.

The Roller Dolls formed in February, but both teams are currently recruiting more players for the contact sport that has been catching on lately.

"It's huge right now," O'Callahan said of the sport. "It's getting large everywhere. It's a way for women to get a workout, along with a way to form friendships. It's kind of perfect for that."

Tevis can attest to O'Callahan's sentiments.

"It's a chance to get out," Tevis said. "You can turn on an alter ego. It also turns into a sisterhood. Over the years, you lose touch with your friends from high school. Since I've joined this, the girls have become my best friends."

The girls have been coming together over a sport that's been around since the 1880s.

Racing around an oval track on roller skates, the object is for a "jammer" to pass as many opponents as possible. The jammers begin behind four blockers, who attempt to help their jammer get through the crowd, while the other team is trying to stop the team's jammer. At the end of a two-minute "jam", the amount of girls passed by each jammer is counted up for a score. Each bout consists of two 30-minute periods, with the team with the most points winning.

While the sport was legitimate for many years, it became more entertainment than a sport, much like professional wrestling in the 1960s and 70s.

However, since the turn of the century, it has become more about athleticism, with the formation of the Women's Flat Track Derby Association in 2001.

The WFTDA is the governing body for the sport and both the Roller Dolls and Derby Militia are attempting to become a part of the organization.

"We want to be accepted, but until then, we're still bouting," O'Callahan said.

While both teams are looking to join the WFTDA, they're looking for more girls to sign up, as each team has approximately 20 girls. Both teams are training for the 2011 season, which would begin in February.

In preparation for the season, the Roller Dolls practice at Eastlake Skate Center and the Derby Militia hone their skills at the National Guard Armory.

And it's not just skaters that are signing up.

"We're recruiting skaters, medics and referees," Tevis said. "Anyone who wants to help."

Some of the girls that come out can barely skate, but they do receive help.

"The first thing we teach is how to take a fall," O'Callahan said.

On top of teaching the nuances of the sport, the girls are also taught how to serve the community.

"Our goal is to help the people, and we're using roller derby to do that," Tevis said.

The Roller Dolls have been working with Combined Community Services, and will conduct a Christmas with the Roller Dolls on Dec. 12 at Eastlake Skate Center.

"We are very community-based," Megan Cook, a captain of the Roller Dolls, said. "When we hold a bout, all the proceeds will go to charity. It's a real philanthropic sport."

Since forming in August, the Derby Militia has helped with numerous charities, including the EMS Charity Golf Tournament, Rescues and Runaways, which benefitted animal shelters, and a canned food drive for the CCS. The team will also be ringing bells for the Salvation Army in December among other projects.

For more information on each team, visit warcityderbymilitia.com or lakecityrollerdolls.com