I was going to by-pass your question, but I will attempt to answer your question from a Biblical viewpoint.
Without any interference from God, Jesus or any other angel, Satan could easily defeated 10 million armed men including their nuclear weapons.
The reason is that Satan is a spirit being. One can’t defeat a spirit being with physical means. The dimensions/spheres are different. In other words, the men wouldn’t be able to see Satan, but Satan could see them.
If the Angel of Death could destroy the firstborn of Egypt or devastate Israel when David counted the men, 10 million men with its armory would be nothing at all. The 10 million or 100 million would drop like flies and Satan wouldn’t even break out in a sweat at all that is if God would permit it, but he wouldn’t since humans are his creatures and he loves them despite their wayward attitude an behavior.
SUMMARY: Satan is the god of this world, so 10 million men going to combat against him would be fruitless. One can’t kill a spirit being with any human means.
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