Landgraviate of Hesse-Darmstadt
The Hessian War (), in its wider sense sometimes also called the Hessian Wars ("Hessenkriege"), was a drawn out conflict that took place between 1567 and 1648, sometimes pursued through diplomatic means, sometimes by military force, between branches of the princely House of Hesse, particularly between the Landgraviate of Hesse-Cassel and the Landgraviate of Hesse-Darmstadt. It was triggered by a division of inheritance following the death of the last landgrave of all Hesse, Philip I in 1567.