Your courage is admirable and good.

But ask yourself what are you going to prison for, what are you going to fight for in a gun fight?

I would go to prison, if it honours my Lord Jesus. I would fight a gun fight to defend my family against a criminal. But for a nation state? Look at history, countries rise and fall, some vanish into oblivion. If your country is a beacon of freedom, go and fight. If nobody fights for freedom, freedom ceases immediately. Sadly the UK has left the path of freedom and embraced socialism/greenism.