I need to know how for my army sake
You mean like this?
Press Ctrl+G when in the text box. Or click the little landscape picture in the top row of buttons.
If you’re trying to post an image from the web you can copy the image first and then use Ctrl+V to paste it into your post. Make sure there’s a full return in between your text and the image. Otherwise the link for the image will show up instead of the image. (Return by pressing Enter)
(Return again here leaving this space empty)
Your army is dead.