Dunno. Anyone of those armies would give a "Western" army a very hard time methinks. The NVA are the heirs of "Charlie" later known as "Mr Charles" as sign of the US grunts growing respect for them. They also resisted successfully the most advanced and sophisticated military force on the planet at the time.
If I was jungle fighting, give me a regiment of NVA at my back. Not the best?
The PLA nearly defeated the UN in Korea. It got so bad in the winter of 1951 that MacArthur publicly wanted to use the A bomb. Truman then sacked him. Not a "best" army, despite showing incredible courage, fortitude and zeal, under a steel rain of Western air and artillery superiority?
Those Serbians are the heir to Marshal Titos guerrila army that tied down on average 20 German divisions at any one time, especially after 1943. The USSR were very wary of fighting Yugoslavia for all of the cold war. Not the best mountain fighters?
The Cubans have performed very well in Africa in the 80s-90s too. in the early 60s they would have fought to the death to repel any US invasion. Casualties would have been horrific for both sides. Not a "best army" despite 50 years of crippling sanctions?
The IDF is just unique. It also has some of the best armoured and special ops forces in the world. Its airforce is arguably the best in the world. Fact. It has fought and won 6 wars, including a desperate defence in oct 1973, turned to a remarkable counter attack nearly occupying Cairo and Damascus. A campaign studied in staff colleges around the world? And lets not mention the 6 day war..
Not the best?
That arbitary dismissal of brave and capable forces is not like you Bear. I would call your list Western bougeous imperialist underestimation..
Actually I was thinking of the US army
The origins of the U.S army are very much rooted in insurgency. The revolutionary war of 1776-83.
That was an 18th century insurgency. Very similar to Vietnam in many ways. The R.W was Britains 18th century Vietnam.
Even the US forces were similar in that they had a "regular" army like the NVA and a guerrilla / insurgency element. The hostile population. Like the Viet Cong.
The French support of the Colonies were the R.W equivalent of the Russians/Chinese arming and training the NVA/VietCong
Even the cold war element of client backing. The British used many indiginious tribes as allies (with a lot of success) just like the US with the Montegnards and other ethnic groups in Vietnam. Britain and France were the US and Sovs of the 18th C.
The parallels are striking.
None of this is new, it aint a 20/21st century thing. Only the weapons change. And the ideologies, but even that not too much.