撤退

1. Origins, structure, and basic meaning

• Structure: 撤退, read てったい, denotes withdrawal from a position or line of business.
• Basic usage: 砦から撤退した describes a unit retreating; 事業から撤退を決める describes a company deciding to leave a business.

2. Common pitfalls and similar expressions

• Military retreat and business withdrawal
  • Both mark the point left with から, but a military unit favors retreat and a company favors withdrawal.