Complex sentence: Funding from benefactor Carl Smith created the foundation for the 230-piece Cavalier Marching Band in 2004, replacing the Virginia Pep Band in its official capacity at athletic events.
Split into simpler sentences: Funding from benefactor Carl Smith created the foundation for the 230-piece Cavalier Marching Band, which was introduced in 2004. This replaced the Virginia Pep Band in its official capacity at athletic events.