30.

God the giant killer

After God kills off the old soldiers in his early retirement program (29) and before the new, youthful army begins to kill again for him, he brags a bit about some of his past killings. He is especially proud of knocking off an entire race of giants, the Zamzummim.

That also was accounted a land of giants: giants dwelt therein in old time; and the Ammonites call them Zamzummims; A people great, and many, and tall, as the Anakims; but the LORD destroyed them. Deuteronomy 2:20-21

There were a few other groups that God also killed that I don't think I've accounted for yet: the Horim, Avim, and the Caphtorim.

As he did to the children of Esau, which dwelt in Seir, when he destroyed the Horims from before them; and they succeeded them, and dwelt in their stead even unto this day: And the Avims which dwelt in Hazerim, even unto Azzah, the Caphtorims, which came forth out of Caphtor, destroyed them, and dwelt in their stead. 2:22-23

The Bible doesn't say how many were in these groups. So I'll just guess 5,000 for the lot of them.