Once again, you're talking about something you do not understand.
The Counsellors of State are virtually always the consort to the monarch and then the first four adults in the line of succession (adult is defined as 18 years old for the first in line, and 21 years old for others). That's how it works. The law was changed for Elizabeth because up until that time, it referred to the heirs male of the monarch, not just the heirs when considering the status of the first in line to the throne.
The current counsellors of state are the Duke of Edinburgh (as consort), the Prince of Wales, the Duke of Cambridge (Prince William), Prince Harry, and the Duke of York (Prince Andrew).
All four of the Counsellors in the line of succession have served in the military while they have been Counsellors of State. Two of them (the Duke of York and Prince Harry) have served in combat while they have been Counsellors of State.
One of the reasons there are five Counsellors of State is to ensure that at least two are available, if the others are busy with other duties (two acting together are required to take the place of an absent Monarch).
The Princess Elizabeth as a Counsellor of State, but nothing in that role prevented her from serving in the military. Prince Henry, Duke of Kent, was a Counsellor of State when he was killed on active service in 1942.
And the Princess may well have had security when she was driving her truck - she almost certainly did in fact. Just as Prince William currently has security officers assigned to him while serving as a RAF search and rescue pilot. They stand in the background and don't interfere with military duties.
A truck driver cruising around Britain alone? “At the end of the war in Europe, on Victory in Europe Day, Elizabeth and her sister mingled anonymously with the celebratory crowds in the streets of London. She later said in a rare interview, “we asked my parents if we could go out and see for ourselves. I remember we were terrified of being recognised ...” Odd, since she was a local truck driver, the only one living in Windsor Castle, you would think that she would be known to everyone.
Again, you show a distinct lack of knowledge here - the VE Day celebrations took place in central London in the area around Buckingham Palace. The Princess was living at Windsor Castle and so was not a 'local truck driver'. In fact, she wasn't even that local to Windsor Castle when she was driving. She was based at Aldershot, twenty miles away from Windsor Castle. Yes, she was worried about being recognised while in a crowd right outside the main palace in London. The odds of her being recognised while driving a truck in Portsmouth would have been far, far less.
The three week course she took was a three week course, as far as how long she was carried on the books in the Auxiliary Territorial Service as active which was months, that was merely part of the image, she didn’t actually drive trucks around, before her discharge as a Captain.
Yes, she did. She drove supply and transport trucks from March 1945 until July 1945 as an active service officer of the Auxiliary Territorial Service. That is a fact.
You just keep saying ‘yes she did’, well no she didn't, and it is idiotic to think that she was cruising around delivering goods driving a truck, yet living under high security the rest of the time.
You even admit that if she did drive a truck to a delivery for the propaganda show, that she would have had a security detail accompanying her, presumably in multiple vehicles, and involving many men (all for a single female truck driver), I would not be surprised that that had to have happened at least once for the newsreels and photographs that this charade was created to make.
Research keeps showing the same propaganda reporting over and over, nothing reveals her as a real truck driver for the five months that she was earning her Captain rank.