I Chronicles 19:8 Midrash

וַיִּשְׁמַ֖ע דָּוִ֑יד וַיִּשְׁלַח֙ אֶת־יוֹאָ֔ב וְאֵ֥ת כָּל־צָבָ֖א הַגִּבּוֹרִֽים׃

And when David heard of it, he sent Joab, and all the host of the mighty men.

Read midrashic interpretation of I Chronicles 19:8: and classical rabbinic exegesis.