Complex sentence: Letterman and Moore grew to appreciate their service, and decided to form an organization that would ensconce these ideals, and on the dreary night of February 19,1852, the brotherhood of Phi Kappa Psi was born.
Split into simpler sentences: Letterman and Moore grew to appreciate their service, and decided to form an organization that would ensconce these ideals. On the night of February 19,1852, the brotherhood of Phi Kappa Psi was born.