Islam has wanted France since the 700s. Unlike Christianity, Islam doesn’t stop until it gets what it wants. It will take a huge army led by an El Cid to remove them now, or God’s Spirit inundating mosques and causing mass conversions.
I don't think a huge army defending Europe from Islam is in the cards. The EU is using the Islamic hordes to kill European (i.e., Judeo/Christian) civilization so that it can replace it with communism administered by the EU.
How the EU plans to get rid of Islam when the time comes is a mystery. I guess they plan to maintain their grip on the treasury and just turn off the spigot at the appropriate time.
When the Muslims riot and burn their own communities, the EU will just watch them burn.
The enemy of Islam is the same as the enemy of the EU...the man in the street who loves freedom.
Pockets of guerillas can wreak havoc on the Muslim communities and the nation members of the EU.
That is the enemy of Islamic/EU Europe.
I think the Gilets Jaunes are emblematic of the army of the future (even if they don't know it yet). They are the beginning of what must spread and grow.
Or fire and brimstone ala Sodom and Gomorah