How many trained men did Abram take to rescue Lot?

Answer: 318

When Lot was captured, Abram mobilized the 318 trained men born in his household and pursued as far as Dan.

“And when Abram heard that his relative had been captured, he mobilized the 318 trained men born in his household, and they set out in pursuit as far as Dan.”— Genesis 14:14 (BSB)