Over 51% of Egypt voted for President Morsi

The Egyptian army illegally deposed President Morsi. 

He was elected by 51+% of the electorate.

This 51+% of the electorate,  to put it very mildly is now a little bit irked by this actions of their army; and the army is in turn counter irked by their irk and are now going to use live bullets to suppress the irked members of this 51+% of the electorate.

Let us say half the population of Egypt are children and juveniles. If so, then of a population of 83 millions, the Egyptian electorate numbers 41.5 millions. 
We know that 51+% of the electorate voted for President Morsi, i.e. 21 millions. We can therefore say that in Egypt today 21 millions are in irked against their army.

Now, you really wonder: 

what really would have to be the size of an army 

that you would need to hold the ground against an insurgent population of 21 million dedicated Islamist Wahabi Jihadists especially if they get the arms to help them from Saudi Arabia, USA, England, Germany, Sri Lanka, United Emirates, Iran, Pakistan, Hamas, Hezbollah, North Korea, al Qaeda, Israel, CIA, Fiji, Tuvalu and many others?

I know you think I am jesting!
Am I?
Thinks on this. Already President Barack Obama has seriously scolded the Egyptian army for their recent massacre of 500+ Islamist Wahabi Jihadists members of this 51+% of the electorate.