Re:The Queen has more power over British law than we thought
by kitd on Thursday February 11, 2021 @05:34AM
(#26100094)
IIRC, it's because the British Army can trace its origins back to the New Model Army, so pledging allegiance to the Crown was more than just a formality back then.
In contrast, the 'Royal' Navy was created expressly by the monarch so allegiance is implied.
This requirement only seems to apply to British Army, the Navy and Air Force are exempt. W good example of how unimportant the pageantry is.