It is my pleasure to provide the following information I have found recently:
Hannover Cl.II 218/18 was bought in 1919 from Germany (funny, there were some serious fighting between Poles and Germans in that time and this very a/c was later used against the seller!) as 667/18 (built by Roland) and arrived at Lawica aerodrome (now Poznan International Airport) on 30.04.1919. It was overhauled, repainted and serialled 218/18 before 05.05.1919. The colours were presumably green and brown, undersides most likely left in original Roland light blue. Used for recce mission over Pila (Schneidemuehl) on 12.05.1919 and damaged during the landing - flown by Lt. Jerzy Dziembowski and Serg. Zdzislaw Bilazewski. Repaired and later used in Pilot School at Lawica between 11.09.1919 and 01.11.1919. On 01.11 disassembled and sent to the eastern front - to Lwow (now Lviv, Ukraine) destined for 5. Sqn. However, after the assembly on 06.12.1919 found to be in too bad condition to be used in front service. Still, on 18.02.1920 sent to 9. Sqn but again found unfit for front service, sent to Warsaw to Central Aircraft Depot on 02.06.1920. Then moved to Central Aircraft Workshop (CWL) on 18.06.1920, where it was probably cancelled.
Sources:
M. Kabatek, R. Kulczynski, Aviation History of Pila Region (Lotnicza Historia Ziemi Pilskiej 1910 -1945), Stratus, Sandomierz, 2011.
T. Kopanski, Aircraft Hannover CL.II in Poland (Samoloty Hannover Cl.II w Polsce), in: Military Aviation (Lotnictwo Wojskowe), vol.1, 1998.