Complex sentence: In February 1789, Carl Theodor decreed that military gardens should be laid out in each garrison city to provide soldiers with good agricultural knowledge and serve as recreation areas, accessible also to the public.
Split into simpler sentences: In February 1789, Carl Theodor decreed that military gardens should be laid out in each garrison city. The gardens were meant to provide the soldiers with good agricultural knowledge and serve as recreation areas, but they were also supposed to be accessible to the public.