Each unit category in Battlecry contains different classes of units, and each class has its own strengths.
Some units are better for attack, while others are stronger in defense. For example, a unit like a Scout Sniper may perform better in attack, while a Machine Gunner may be stronger in defense.
Since battles automatically use your best units from each class, it’s important to own a mix of both attack-focused and defense-focused units.
If you only focus on one type, your overall performance may suffer. A balanced approach ensures you stay strong whether you’re attacking or defending.