Just a quick post for the information -- when your informatics level is too low to get exact numbers, you'll get ambiguous reports. When estimating whether your troops can defeat them, always use the highest end of the range to minimize casualties.
Few: 1 – 24
Pack: 25 – 49
Lots: 50 – 99
Horde: 100 – 249
Throng: 250 – 499
Swarm: 500 – 999
Zounds: 1000 – 2499
Legion: 2500 – 4999
Bulk: 5000 – 10000
Giga: >10000
: Genghis
