Complex sentence: The first official German Stormtrooper unit was authorized on 2 March 1915--the German high command ordered the VIII Corps to form a detachment to test experimental weapons and develop tactics that could break the deadlock on the Western Front.
Split into simpler sentences: The first official German Stormtrooper unit was authorized on 2 March 1915. The German high command ordered the VIII Corps to form a detachment to test experimental weapons and develop tactics that could break the deadlock on the Western Front.