Complex sentence: Upon reorganization of the National Guard, with Governor Hartranft as the major general, Huidekoper was appointed the senior brigadier general in the guard; in 1879 he compiled and published a Manual of Service, which became an accepted authority on military matters.
Split into simpler sentences: Upon reorganization of the National Guard, with Governor Hartranft as the major general, Huidekoper was appointed the senior brigadier general in the guard. In 1879, he compiled and published a Manual of Service, which became an accepted authority on military matters.