GET vs. POST?

[LAMaglan]

Although working, It is possible that it makes more "sense "for battle and types endpoints to be POST requests (i.e. app.post) than
GET requests. Investigate, if refactoring, make necessary updates

[LAMaglan]

Revisit at later date. Changing to POST requires some changing of the code, more than just
@app.get to @app.post

Possible that one part is to switch templates.TemplateResponse() to RedirectResponse (from starlette.responses)