You're quite right in the sense that the military invaded, but it was not so much an occupation with a puppet government and continuous guerilla warfare , like

You're quite right in the sense that the military invaded, but it was not so much an occupation with a puppet government and continuous guerilla warfare , like the Soviets in Afghanistan, the Nazis in France or the US in Iraq. It was more of an anexation of adjoining territory based on historical claims (fabricated or not), like Germany with Alsace Lorraine, Russia with Crimea or the US with certain parts of northern Mexico. The point was not so much about seizure of territory but the huge cost of a prolonged occupation with local resistance. I was definitely not trying to legitimize the invasion of Tibet nor downplaying the suffering of the Tibetan people, so thank you for bringing this up.