From Longman Dictionary of Contemporary Englishriflemanri‧fle‧man /ˈraɪfəlmən/ noun (plural riflemen /-mən/) [countable] a man who uses a rifle
Examples from the Corpus
rifleman• They were our two best riflemen.• I was able to walk along the line and give encouragement to my resolute riflemen..• The rifleman stood to one side of me. 