兵法

1. Origins, structure, and basic meaning

• Structure: 兵法 (へいほう) denotes a system of military strategy and tactics. 兵法の書 is a book about that discipline; 勝つ兵法 is a method of achieving victory.
• Basic usage: An old strategy treatise is read in modern language, and a strategy for winning without fighting becomes story material.

2. Common pitfalls and similar expressions

• Strategy recorded as knowledge and strategy used as a method
  • 兵法の書 names a field of content, whereas 勝つ兵法 identifies a practical strategic method. The headword should not be parsed as ordinary legal 法.