If you know the enemy is going to walk across a specific field at a specific time you can prepare. Pre-sight artillery, arrange a mine field, lay an ambush, flood the field, etc.
I’d you don’t know the enemies plans you have to prepare for all possibilities and you can’t concentrate your resources
You can do anything, but you can’t do everything. In the military there is the concept of defeat-in-detail. Even if you have a better force, with larger numbers, a engagement where the enemy has concentrated resources can overwhelm the superior force in small engagements. This is the key behind guerilla warfare, the weaker force attacks the stronger force where they don’t anticipate, strike fast, disappear.
Preparation is the problem.
If you know the enemy is going to walk across a specific field at a specific time you can prepare. Pre-sight artillery, arrange a mine field, lay an ambush, flood the field, etc.
I’d you don’t know the enemies plans you have to prepare for all possibilities and you can’t concentrate your resources
You can do anything, but you can’t do everything. In the military there is the concept of defeat-in-detail. Even if you have a better force, with larger numbers, a engagement where the enemy has concentrated resources can overwhelm the superior force in small engagements. This is the key behind guerilla warfare, the weaker force attacks the stronger force where they don’t anticipate, strike fast, disappear.