During their time with the Anti- Nazi Dutch resistance group they went on missions to help stop the Nazi's and some of those missions include sabotage, rescuing Jews children, and killing Nazi officers. They also stole identification papers. but some important facts of the sisters. They often went to bars looking for Nazi officers and they often led these Nazi officers in the woods where they would be killed and later they had added an older girl named Hannie Schaft and she helped out with their missions.

The three girls made a big impact on society by being part of the Dutch resistance and the missions they carried out with the resistance and their bravery will forever be remembered by society.

“you shouldn’t ask a soldier how many people he shot”—and they were soldiers too." stated Freddie in an interview

"If you experience something like this, you’ll find it justified that when people commit treason, such as exchanging a four-year-old Jewish child for 35 guilders" Truus stated

“We did not feel it suited us – it never suits anybody, unless they are real criminals … One loses everything. It poisons the beautiful things in life.” stated Truss in a interview