# Defence Scheme No. 1

> 1921 Canadian plan to attack the United States

**Wikidata**: [Q5251249](https://www.wikidata.org/wiki/Q5251249)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Defence_Scheme_No._1)  
**Source**: https://4ort.xyz/entity/defence-scheme-no-1