You're referring to the game "Nobunaga's Ambition: Kakushiin with Power-up Kit RAR Updated"!
Manage Your Officers: Your generals are your greatest asset. High-stat officers can turn the tide of battle, but keeping them loyal is a full-time job. Use rewards and marriages wisely to prevent defections. Conclusion nobunagasambitionkakushinwithpowerupkitrar updated
The "Technology" War: The game's defining "story" mechanic is the Tech System. Unlike other entries, you don't just win with numbers; you win by out-pacing rivals in research. For example, focusing on Muskets allows you to research "Triple Volley" (Nobunaga's historical tactic at Nagashino), which can melt even the largest cavalry charges. You're referring to the game "Nobunaga's Ambition: Kakushiin
The "Power Up Kit" adds significant content that was not in the base "Kakushin" release: Use rewards and marriages wisely to prevent defections
Below is a concise informational text summarizing the game, the Power-Up Kit, and notes on the "RAR updated" context.
DirectX 9.0c: Even on a high-end PC, you may need to install the DirectX 9.0c end-user runtime, as modern versions of DirectX don't always include the legacy files Kakushin relies on.