If thinking of trading as a combat enables you to trade more effectively, all well and good. But warfare demands that you bring up all of your resources. It's an all or nothing affair, involving ambush, pillage, rape, scorched ground, wounding, life and death, victory and defeat. A trader goes out each day to do battle with the market. He is at war with the market.
Exhaustion is the least of the difficulties.
Thinking of trading as warfare could cause you to overtrade or undertrade. Attack and retreat. Such a metaphor could cause you to lose money trading. If you are at war with the market, you have an unequal contest. The market is much bigger than you are.