a single legion was at that time ~ 5,000 trained fighting men. so the reference is to somewhere in the neighborhood of ~60,000 angels prepared for war.
when the Jews revolted against Roman occupation in 66AD they did so with considerably less than 20,000 militia, and won some key victories. Gallus mustered the Syrian army and fielded about 30,000 to quash the rebellion, with some short-lived success. in 67-68, Vespasian & Titus invaded with approximately 60,000 Roman troops ((coincidence?)). this is the fighting force which ultimately under Titus' command ((Vespasian, his father, having returned to Rome to pursue political power, it seeming possible that he might be named Caesar)) laid siege to Jerusalem and destroyed the temple in 70 AD. [/QUOTE
And let us not forget that one Angel destroyed an army of 185,000.