Task: Translation
Input (English): English sentence: Gentzen remained on the staff at Göttingen until 1943, although he had to undertake military service in the years 1939 until 1941.
Output (Tagalog): Gentzen naiiwan sa mga kawani at Gottingen hanggang 1943, bagaman niya upang magsagawa ng militar sa taong 1939 hanggang 1941.