1)
What is the meaning of "Kol Tzava ha'Giborim"?
1.
Radak: It means the Tzava (army) and the Giborim. 1
1
In Shmuel II, 10:7 it says "ha'Tzava ha'Giborim." Radak gave a second Perush there, that the prefix Hei in ha'Tzava is extra, like "ha'Am ha'Milchamah" (Yehoshua 8:11).
