Codswallop !
It was an invasion by any measure.
Argue with Mr Oxford.
https://www.google.com/search?q=invasion+meaning&client=firefox-b-d&sca_esv=23188ff84b8e16a4&ei=-U_eZpzvKsyU4-EP74TfoAY&ved=0ahUKEwjcz8--27SIAxVMyjgGHW_CF2QQ4dUDCBA&uact=5&oq=invasion+meaning&gs_lp=Egxnd3Mtd2l6LXNlcnAiEGludmFzaW9uIG1lYW5pbmcyEhAAGIAEGLEDGEMYigUYRhj5ATIKEAAYgAQYQxiKBTIFEAAYgAQyBRAAGIAEMgUQABiABDIFEAAYgAQyBRAAGIAEMgUQABiABDIFEAAYgAQyBRAAGIAEMiwQABiABBixAxhDGIoFGEYY-QEYlwUYjAUY3QQYRhj5ARj0Axj1Axj2A9gBA0isElCuBVi1EHABeAGQAQGYAcMDoAGaEKoBBzItNC4yLjG4AQPIAQD4AQGYAgegAtwNwgIKEAAYsAMY1gQYR8ICDRAAGIAEGLADGEMYigXCAg4QABiwAxjkAhjWBNgBAcICExAuGIAEGLADGEMYyAMYigXYAQLCAgoQLhiABBhDGIoFwgIQEAAYgAQYsQMYQxiDARiKBcICLBAAGIAEGLEDGEMYigUYRhj5ARiXBRiMBRjdBBhGGPkBGPQDGPUDGPYD2AEDmAMAiAYBkAYSugYGCAEQARgJugYGCAIQARgIugYGCAMQARgTkgcHMS4wLjMuM6AH3GU&sclient=gws-wiz-serp
