If we can have 20,000 Spartans two thousand years past their freshness date I think we could somehow get a few old planes.
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Or if we took 9 guys running 3 tels of M142 HIMARS, 4 guys flying AC-10s, 15 guys running M1A3s, and 10 guys running an AC-130J, and 1 guy with a tactical nuke (just in case) - then the remaining 61 ground troops would be overkill.
Alternately using just one boomer with full Trident load or and SSGNs with 154 tomahawks - no troops need to get bloodied ; observers should stand well away from field of conflict.
You know, a much more historically interesting encounter would involve ancient Greeks, 13th century Scotts and a warehouse full of booze between them.