In Hearts of Iron IV (HOI4), Intervention Forces are navy items that may be deployed to different nations to help their battle efforts. These forces could 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 could want them to defend your individual nation, or you could need to redeploy them to a unique nation that’s in better want of help. Regardless of the cause, you will need to pay attention to the diplomatic penalties of recalling Intervention Forces earlier than you achieve this.