In Hearts of Iron IV (HOI4), Intervention Forces are army items that may be deployed to different nations to help their warfare efforts. These forces will be recalled at any time, however doing so will incur a diplomatic penalty with the nation that they have been deployed to.
There are a number of the explanation why you would possibly need to recall Intervention Forces. For instance, you might want them to defend your personal nation, or you might need to redeploy them to a unique nation that’s in higher want of help. Regardless of the purpose, you will need to concentrate on the diplomatic penalties of recalling Intervention Forces earlier than you achieve this.
