Britain, Malaysia, 1959.
I though Malaysia kicked out U.K.?
Bingo!
You might include British operations in the Trans-Jordan region after World War I.
In the early 1970s there was a book, red covered BTW, that explored the total British experience post World War I dealing with insurgency in Arabia, Africa, Aaden, and Malaysia. Note the insurgents were African Tribesmen, Arabs, and Malaysian/Chinese so this covers a wide range of ethic backgrounds.
It closed with the author’s (A British Army General officer) hopes that the Americans would succeed in out efforts in Indo-China which would put its publishing date in the late 1960s.
I think was titled “Counter-Insurgency” but it disappeared from my personal library decades ago so I can not be more specific. More in a PM when (if) I can find a small publishing company that specialized in military subjects.
I read where a unit of Gurkhas stayed nose deep by a river bank for some 20-odd hours waiting to ambush a group of insurgents. They did, and wiped them out to a man.
You don't win against guys like that.