You don't need to wield a blood-stained sword, nor crusade with an army throughout distant lands to demonstrate Christian courage. You can spread God's word in your very own neighborhood or use the internet to share the Gospel around the world.
1 Corinthians 16:13-14 provides faithful encouragement. "Watch, stand fast in the faith, be brave, be strong. Let all that you do be done with love."
Christian courage is not the absence of fear, nor the overt act of being fearless, but the capacity to do right, and speak righteously, even when confronted by the apathetic, the doubters, or the disbelievers. God has called every Christian to be a wittiness of Jesus Christ and share the Gospels. Not just some of us, but all of us. What percentage of Christians do you believe fail to do this with any consistency? Do you witness? If you answered yes, in what percentage of the opportunities do you speak up for the Lord? Seldom, sometimes, almost always?
Don't you think just about every one of us, at one time or another, has been overtaken by fear or hesitation? When the outcomes of situations are unknown, we often become very troubled or uneasy. Do you remember an experience like that in your past—or possibly in several very similar instances? Perhaps you find yourself meekly timid, or worried when it comes to speaking up for Christ? Perhaps "worried" was not the best adjective to describe those feelings you experienced. Possibly, extremely apprehensive, concerned. Or even down-right stressful, would better describe how you felt under the pressures of duress? Yes, fearfulness and anxiety can wash over you like a wind-whipped thunderstorm.