fallen: i.e. upon his own sword (1 Samuel 31:4).
Related Commentaries of 2 Samuel 1:10
2 Samuel 1:10
10 So I stood upon him, and slew him, because I was sure that he could not live after that he was fallen: and I took the crown that was upon his head, and the bracelet that was on his arm, and have brought them hither unto my lord.