After 1890 the Citadel ceased to have a defensive role .
After 1890 the Citadel functioned instead as a large barracks and mobilisation centre , with additional hut accommodation provided for up to 900 soldiers in total .
After 1890 the Citadel ceased to have a defensive role and functioned instead as a large barracks and mobilisation centre , with additional hut accommodation provided for up to 900 soldiers in total .