Dear David,
I am not sure that Anglo Saxson is well understood in North America, Was it not Churchill who said of American and Britain that they were 'two countries separated by a common language' - probably not.
I once played the word game Boggle in Canada, the aim of Boggle is to communicate the meaning of a given word to your partner without using it, ideally by association or simerly etc. It soon became quite obvious that words have different subtlties in Canada and I suspect America also.
In NATO we generally had to use American spellings as staff officers to avoid confusion since the English are naturally able to compensate for variance.
with warm regards
Sulasailor.