1. Psychological Warfare: Psychological warfare aims to break down the morale and spirit of the enemy population. It involves propaganda, spreading misinformation and manipulating emotions. It's aimed at creating fear, uncertainty, and chaos among the enemy.

2. Direct Assault: In this approach, enemy civilians may become collateral damage due to bombings and attacks targeted at military and infrastructure facilities. The primary goal is to impair the enemy's capacity to fight.

3. Scorched Earth Strategy: The purpose of this approach is to deprive the enemy of any resources that might be useful to them. This can involve the destruction of food, water, infrastructure, and more. This impacts the enemy's populace and potentially undermines support for their war effort.

4. Blockades: In this strategy, one country may blockade another's ports or borders, thereby cutting off vital supplies such as food, medicine, and resources for the enemy populace. The intention is to weaken the enemy's resolve to fight due to resource shortage and suffering of the civilians.

5. Divide and Conquer: This is a strategic approach in which a warring country seeks to exploit internal conflicts and divisions among the enemy populace, with the goal of weakening them. This might involve exacerbating religious, ethnic, or political divisions within the enemy's populace.

6. Espionage and Sabotage: Countries often rely on secret agents and saboteurs to create fear, uncertainty, and paranoia among the enemy population. Sabotage can create physical damage, while espionage can spread fear of unknown spies and attacks.

7. Dehumanizing the Enemy: In an attempt to boost morale and resolve among their own populace, countries often seek to dehumanize the enemy. This involves painting the enemy as inhuman or evil, thus justifying any means necessary to defeat them.

8. Use of Fear Tactics: Fear is a potent weapon in war, and often used against the enemy populace. This could be through the use of surprise attacks, threatening destruction of cities, and creating a sense of impending doom.

9. Diplomacy: Though it may not seem like a strategy for war, diplomatic efforts are often used as a means of impacting the civilian population of an enemy nation. Diplomacy can create internal pressures on enemy leadership, erode international support, and lead to shifts in power and policy that can be advantageous.

10. Counterinsurgency: In some situations, war strategy focuses on rooting out and eliminating rebel groups within a civilian population. This often involves winning hearts and minds of civilians, to isolate and marginalize the insurgents.

These strategies show how civilian populations can be affected directly and indirectly by war strategies, resulting in substantial psychological, economic, and physical impacts.