It was something that touchy, militant, despot countries did all the time, but supposedly 'great nations' showcased their military might but never needed to exercise it.
The idea of Britain going to war freaked me out.
For the first time, I realised that putting on a cool uniform could involve more than just playing with guns, painting your face, learning a trade and enjoying cheap booze.
Thatcher's choice in declaring war on Argentina was a growing-up point for me because it made me realise wearing a uniform meant, regardless of nationality or remote likelihood of war, you signed up to kill people, and in turn, get shot at.
I'm sure there would have been a lot of British military personnel who would have thought: what the hell? I'm actually going to war?
Today, British and New Zealand personnel are involved in theatres of war in Iraq and Afghanistan and there is a measure of pride in that.
But Thatcher taught me one thing: never, ever volunteer to wear a uniform.
Because shot at is definitely not cool.