Melachim Alef 2:5

Moreover thou knowest also what Yoav Ben Tzeruyah did to me, and what he did to the two sarim of the Tzivos Yisroel (Armies of Yisroel), unto Avner Ben Ner, and unto Amasa Ben Yeter, whom he killed, and the shefach dahm of war in shalom (peacetime), and put the dahm of milchamah (war) upon his khagorah (sword belt) that was about his loins, and on his na'alayim (sandals) that were on his raglayim.