Cash, Income, and Experience (XP) are the core resources that drive your progress in Battlecry.
Cash is the main currency you use to buy units, invest in properties, and grow your military. This is the cash you currently have on hand, and it can be lost if other players defeat you in battle.
Income is the amount of cash you earn automatically over time from your properties. This gives you a steady flow of money even when you're not actively playing.
Experience (XP) determines your level. You earn XP by completing Operations and winning battles. As your XP increases, you level up and unlock new zones, features, and stronger units.
Balancing all three is important: earn cash actively, build income passively, and keep gaining XP to progress.