What is a good word or phrase for a letter that issues an "opening charge" to a group of people.

In my specific case, I need word for a kind of letter that gives authority and encouragement to a group of people who will author a plan for a large organization.

I'm searching for word that is similar to “invocation”, except that it should issue authority rather than appeal to it.

  • 3
    Is this a rallying cry?
    – Barmar
    Commented Nov 14, 2014 at 19:12
  • @Barmar - it's more formal than a rallying cry. The speaker is both issuing authority and communicating to the group that they should be bold in executing with that authority. Commented Nov 14, 2014 at 19:32
  • 'Rallying cry' sounds good to me, as does a 'call to arms.' If you owe the informality to the militaristic source domain, and are looking for something closer to 'invocation,' I worry you'll only run into words that sound too religious, along the lines of 'benediction', 'ordination', 'investiture', etc.
    – jymt
    Commented Nov 14, 2014 at 19:55
  • You might call it a kick-off letter. I usually think in terms of Kick-off meetings (held to get everyone oriented and aligned at the start of a new project) but it might work for a letter as well.
    – Jim
    Commented Nov 14, 2014 at 21:08
  • a vote of confidence could include tacit authorization
    – pazzo
    Commented Nov 14, 2014 at 21:39

1 Answer 1


Whilst it is not a well used term, it sounds like a letter of empowerment.

I think that gives the impression that they have been awarded trust and authorisation within the project, and to some it would also be motivating to have been given 'power'.

From Collins

Empowerment - the giving or delegation of power or authority; authorization

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