Treadgar

really need a bit more information before you can answer this.  primarily when/where are the troops going to be posted.

I think Alexander the Great need twelve Army Special forces personel from 2008. Can you say  "peace in our time".

 

 

Other wise Golden Hord mounted archers on a American Cival war battle feild interests me.

probably doesn't matter a lot who the guys are if you run them through your training program a la the british army of say 1900 or so.  give them lee enfields and some lewis guns along with some of the little french 75 arty pieces and you should be good to go against most any historical army in a standup fight.

theres a series of books by willian r forschen that basically deals with exacty that scenario.

only the mongol archers are 7' tall cannibals

pretty good

more like 8-9' tall.  the lost regiment series runs to 6 or 7 books.

I love this answer. Turn-of-the-century British riflemen would be perfect, right down to their field kit. The Lee-Enfield, 75s, and Lewis guns should hit the sweet spot for reliability vs. effectiveness. All I would add is Vickers guns for fixed emplacements.

The redcoats were a terrific industrial army, but that paradigm has limitations as well as advantages. It depends on the fighting power of the military unit, which was fine if you were lined up against another European army on a fairly level plain, but didn't work so well against insurgents in woods and swamps, because that kind of mission requires a high level of individual initiative at every level. That kind of initiative can really only be developed by natural culture. If you want mobile warfare with maximum coordination at every level and individual initiative, the Mongols were the best that there probably has ever been, because their culture was completely designed around the needs of a mobile army. They coorinated moving armies over hundreds of kilometers using horse messengers better than a lot of modern armies would using radios.

 

Would that be enough to make the difference against nearly a millenia of technological advance? Heck no. But consider what you'd get if you gave Mongols full access to the armaments available toward the end of the American Civil War and then put them up against any military of the day once they had been properly trained in the technical aspects of their use. Mongols were already experts in the use of artillery and engineering in the context of mobile warfare, so that would not be a challenge. The tactics they used with catapults could be adapted to cannons fairly quickly. Once they had mastered marksmanship with repeating rifles, I have no doubt that they would employ them with the same brilliance which they employed their bows.

 

At the same time using Mongols for security work doesn't make lot of sense. I kinda feel like the best ancient army for that mission would be Romans.

the rifled muskets would give the civil war guys a pretty convincing edge until the Horde closed the range and brought their rof advantage into play.  think i'd bet on the civil war troops if i had to put money on it.