Will this action happened in the future?
contains a grammatic error: Will is a modal verb, and may only be followed by a verb in the infinitive:
will + happen not
Hence, the proper form is
Will this action happen in the future?
Regarding your mention of the use of this construction in orders and requests: it depends on which words you use, and on the situation.
Will somebody/you/anybody open the window?
is likely to be a request or order, while
Will this strong wind open the window?
is clearly neither a request nor order, unless Strong Wind is the name of a person.
Will summer follow the spring?
is unlikely to be a request, whereas
Will you follow this red car?
is pretty likely to be one, especially if said to a taxi driver by a passenger.