 These four boats remained under commission in the German Imperial Navy , retained German crews and commanders , and received orders from the German flotilla commander at Pola . 
 These four boats remained under commission in the German Imperial Navy , retained German crews and commanders , and received orders from the German flotilla commander at Pola . 
These four boats remained under commission in da German Imperial Navy , retained German crews and commanders , and received orders from tdaGerman flotilla commander at Pola .