A former band director at the University of California at Davis has filed a sexual-harassment complaint against members of the Cal Aggie Marching Band, citing several incidents of crude and unruly behavior during his first year as director, the San Francisco Chronicle reports.

The director, Tom Slabaugh, filed the complaint last May after failed attempts to bring order to the band, known to be loud and rowdy, created a “hostile work environment,” according to a memorandum obtained by the newspaper. During his year as the band’s director, Mr. Slabaugh said he witnessed a string of “ridiculous, disturbing, and offensive” incidents, including a “naked van,” in whcih male and female band members stripped down to their underwear during road trips.

The memo says that the university would not back initial complaints from Mr. Slabaugh, and that a report to the campus police about a band member breaking a security gate ended up with no arrests and fueled animosity between the director and the band. After the police report, Mr. Slabaugh said, a band member directed obscene hand gestures at him and rammed into him during an encounter in a hallway. The director also received a crude Christmas card signed by the trombone players.

According to Lisa Brodkey, a university sexual-harassment officer, band members have now received sexual-harassment training, and obscene posters and items in the band room were removed. Mr. Slabaugh, a longtime band director who is working on his doctorate in musical arts from the University of Washington, left Davis on stress leave in September. —David DeBolt