Per la ricevibilità e il fregio delle decorazioni straniere da parte di militari USA, vedere anche qui:
http://www.apd.army.mil/pdffiles/r600_8_22.pdf (per l'Esercito USA)
in particolare capitolo 9 da pag 122:
"Chapter 9
Foreign and International Decorations and Awards to U.S. Army Personnel
Section I
General Provisions
9–1. Introduction
a. Intent. This chapter outlines the policies pertaining to the eligibility of individuals to accept or wear foreign
decorations and badges tendered by foreign governments.
b. Law. Section 7342 of title 5, USC (5 USC 7342) provides for employees of the U.S. Government, including
members of the Armed Forces of the United States, to accept gifts or decorations from a foreign government under
certain conditions. No employee of the Department of Defense, however, may accept, request, or otherwise encourage
the offer of a decoration from a foreign government. When possible, employees will refuse to accept such decorations.
Subject to restriction, an individual may participate in a ceremony and receive the tender of a foreign decoration. The
receipt of the decoration will not constitute acceptance of the award by the recipient. The wearing of unauthorized
awards, decorations, or other devices is a violation of the Uniform Code of Military Justice and may subject a Soldier
to appropriate disciplinary action.
c. Policy. Conforming to the consent of Congress, it is the policy of the Department of Defense that awards from
foreign governments may be accepted only in recognition of active combat service or for outstanding or unusually
meritorious performance. Activities normally undertaken by the Armed Forces of the United States in support of an
ally during peacetime are not considered sufficient to merit foreign individual or unit decorations.
d. Constitutional restriction. No person holding any office of profit or trust under the United States will, without the
consent of the Congress, accept any present, emolument, office, or title of any kind whatsoever from any king, prince,
or foreign states (Constitution, Article I, Section 9). This includes decorations and awards tendered by any official of a
foreign government."
Di ordini cavallereschi più o meno "indipendenti", mi pare, in tutto il documento non si parla neppure...