Like I said the majority of Christians in the US military are Catholic. You can spout all you want about who grandma and grandpa vote for, but I can guarantee you that the vast majority of the Catholic men fighting for this country are as conservative as they come.
In spite of Catholicism, not because of it.
I would expect a higher percentage of conservative, country loving people to join the military instead of those leftists who hate it.
Those stats prove nothing. The Catholic vote is by and large liberal.
The following data proves your statement to be incorrect.
If you'd said 'largest denomination' then perhaps you'd be right.
The total PROTESTANTS are MUCH greater than Catholics.