Task: Question Understanding
Input (English): Context : The Gewehr 98 action, using stripper clip loading with the powerful 7.92×57mm Mauser cartridge, introduced advanced infantry weapon features rapidly adopted in the Anglo-American Pattern 1914 Enfield/M1917 Enfield and the Japanese Arisaka Type 38/Type 99. 
Question : What year was Gewehr 98 introduced?
Output (English): service entry