Complex sentence: Stöckmann commanded the Panzerbrigade 15 in Koblenz from 1986 to 1989, followed by a staff appointment as Head of the Personnel, Training and Leadership Development Department at Army Headquarters in Bonn.
Split into simpler sentences: Stöckmann commanded the Panzerbrigade 15 in Koblenz from 1986 to 1989. This was followed by a staff appointment as Head of the Personnel, Training and Leadership Development Department at Army Headquarters in Bonn.