Now, these numbers are completely made up, but I put them in there because nobody knows the numbers. I just want you to know that this is completely made up, and that any numbers you do see are largely made up, because these militias are shifting in numbers all the time.
The general number for the Islamic Front is 50,000 to 60,000, but it could be off by 20,000. This is the problem. They don't give out counts. They all give out counts that are way too high. If you used their own counts, it would probably be 250,000 for each of them. The militias all exaggerate.
For the Syrian government, it's very hard to know. Andrew may be able to chime in here and help me. The Syrian army was at perhaps 400,000 people before this conflict began. Many of the Sunni recruits have fallen away. The government doesn't trust many of them anyway—they're sort of the rank and file—because it's become such a sectarian war. What they've done is they've turned to Alawites, Christians, and other minorities, which they have filled the ranks of the military with. The officer corps is very highly sectarian in order to preserve loyalty. This is why the military has not left.