A significant minority of Scotland’s population would like to find a peaceful path to independence. The same is also true of Puerto Rico. But your assumption that most or all of the people of those countries [sic] are in favour of independence is unfounded, and is in fact contradicted by what evidence we have.
Incidentally, Scotland’s present pro-independence government has a majority (the first ever for any party) within the Scottish Parliament. Yet they have not declared independence from the UK, nor have they made a referendum on independence their first priority for their new term. That should tell you something about their perception of the level of popular support within Scotland for independence!
Canada, Australia, etc. are irrelevant to this discussion, since they never formed part of the United Kingdom (and were developing their own armed forces before the rest of the world perceived them to be independent states in their own right).
Incidentally, the UK does have experience of losing part of its core territory, with the recognition of the secession of most of Ireland in 1922.
Anyway, the armed forces don’t “belong” to the Queen. They’re raised across the UK for the defence, etc. of the UK, are paid for by UK taxes, and fall under the political direction of the UK’s central government.
Finally, no part of the UK has had conscription since around 1960.
I don’t think you know much about Puerto Ricans! They are, and view themselves as, a Latin American people. They do not consider themselves to be indistinct from the people of the United States.
Apparently you do not understand what the word “sovereignty” means!
By very definition, the granting of ultimate authority to Scotland’s own legislative, judicial, and executive “branches” is the establishment of sovereignty.
Your notion of shifting authority away from the Crown seems rather fantastical, too. I suggest you read up on the independence process followed by various countries formerly under the British Crown.
Your view on this is based on… what, exactly?
At the most recent election in Wales the nationalist party couldn’t even scrape 20% of the vote!