How to attack in hoi4

Overview

Hearts of Iron IV (HOI4) is a grand strategy game where players control nations through World War II. A core mechanic is warfare, and understanding how to effectively attack is crucial for victory. Attacking isn't just about sending troops forward; it's a complex interplay of military design, strategic positioning, and tactical decision-making.

Understanding Combat Mechanics

Combat in HOI4 is resolved through a series of dice rolls influenced by numerous factors. The primary goal of an attack is to inflict 'combat losses' on the enemy, which reduces their organization and eventually forces them to retreat. Key stats for infantry and armor include:

• Soft Attack: Effectiveness against infantry and light armor.
• Hard Attack: Effectiveness against tanks and heavy armor.
• Breakthrough: Your ability to resist enemy soft attack when defending. Crucially, it also reduces the enemy's ability to inflict damage on you when you are attacking. A high breakthrough stat is essential for offensive operations.
• Defense: Your ability to resist enemy attacks when defending.
• Armor: A chance to negate incoming damage if your armor value exceeds the enemy's piercing value.
• Piercing: Your ability to penetrate enemy armor.
• Organization: Represents a unit's fighting spirit and ability to stay in combat. It depletes during combat and must be replenished.
• Combat Width: The amount of space a division occupies on the battlefield. This must be managed to fit efficiently within terrain-based combat widths.

Designing Effective Offensive Divisions

The type of divisions you use for attacking significantly impacts your success. For offensive operations, you generally want divisions that can push through enemy lines and inflict heavy casualties. A common and effective template for offensive infantry divisions includes:

• Infantry Battalions: Provide a solid base for holding the line and general combat.
• Artillery Battalions: Significantly boost soft attack and can help with breakthrough.
• Support Companies: Essential for boosting stats. Recommended support companies for offensive divisions include:
  • Artillery Support Company: Adds soft attack.
  • Engineer Company: Provides terrain bonuses, entrenchment bonuses, and defense. Crucial for attacking in difficult terrain.
  • Support Anti-Air: Deals with enemy air superiority and provides some soft attack.
  • Logistics Company: Reduces supply consumption, vital for operations in low-supply areas.
  • Recon Company: Provides combat width and useful bonuses depending on the type (armored, cavalry, tank).

For armored spearheads, you'll want more tank battalions and motorized/mechanized infantry to keep up. The goal is to create divisions with high breakthrough and soft/hard attack values that can punch through enemy lines.

Strategic Considerations for Attacks

Simply having good divisions isn't enough. You need to employ them strategically:

1. Choosing the Target

Identify weak points in the enemy line. Look for areas where the enemy has fewer divisions, lower organization, or is in disadvantageous terrain. Pushing into heavily fortified areas or deep into enemy territory without adequate supply is a recipe for disaster.

2. Utilizing Terrain

Terrain has a massive impact on combat. Plains are ideal for offensive operations due to their high combat width and minimal penalties. Forests, hills, and especially mountains impose severe penalties on attackers, reducing their combat effectiveness significantly. Conversely, defenders in these terrain types receive substantial bonuses. Always try to attack from advantageous terrain or into less advantageous terrain for the defender.

3. Air Superiority

Controlling the skies is paramount. Having air superiority provides significant combat bonuses to your ground troops and allows your aircraft to attack enemy divisions, infrastructure, and supply lines. Ensure you have a strong air force capable of achieving and maintaining superiority over the combat zones.

4. Naval Invasions and Paratroopers

These specialized operations can bypass heavily fortified fronts and create crucial pincer movements. Naval invasions allow you to land troops behind enemy lines, forcing them to divert resources and potentially collapse their front. Paratroopers can capture key victory points or bridgeheads, disrupting enemy defenses.

5. Supply Lines

Attacking units consume a lot of supply. If your troops are in an area with poor supply (indicated by red or yellow icons on the map), their combat effectiveness will be severely hampered. They will suffer from organization and strength penalties, and their reinforcement rate will plummet. Ensure you have built up infrastructure (like supply hubs and railways) or are using units with good logistics support to maintain adequate supply.

Tactical Execution of Attacks

Once the strategy is in place, the execution is key:

1. Concentration of Force

Do not spread your forces too thinly. Concentrate your best offensive divisions on the chosen breakthrough point. Overwhelm the enemy defenders with a superior force.

2. Using Corps and Front Lines

Assign your divisions to armies and then to corps. Set front lines and offensive lines to guide your AI-controlled armies. For manual attacks, click on the enemy province you wish to attack and select 'Attack'. You can also draw offensive lines, which tell your armies to push forward in that general direction.

3. Coordinated Assaults

Launch attacks simultaneously from multiple directions if possible. This can split the enemy's attention and make it harder for them to reinforce. Coordinate infantry assaults to hold the line with armored pushes to break through.

4. Reinforcing the Breakthrough

Once a breakthrough is achieved, immediately send in fresh divisions to exploit the gap. The goal is to encircle enemy units and cut off their supply, leading to rapid collapse.

5. Adapting to the Situation

Be prepared to adapt. If an attack isn't working, don't throw more men at it. Re-evaluate, reinforce the attacking divisions, or switch to a different point of attack. The battlefield is dynamic.

Common Pitfalls to Avoid

• Attacking without air superiority.
• Launching assaults in unfavorable terrain (mountains, deep forests).
• Ignoring supply issues.
• Using poorly designed divisions for offensive roles.
• Attacking with insufficient force.
• Failing to encircle and destroy enemy units.

Mastering attacks in HOI4 is a continuous learning process. By understanding the game's mechanics, designing effective divisions, and employing smart strategy and tactics, you can significantly improve your offensive capabilities and achieve your wartime objectives.