3 .
With the dubious benefit of 2,000-odd years of history, political and technical progress, Christians ~ as followers of the Prince of Peace ~ may well look, collectively, askance back over their shoulders at wars (and similar) waged in the name of their faith over that period. As recently as Victorian times (the later 19th century), the British 'establishment' in particular assumed a virtually divine right to colonise wherever they pleased, subduing 'natives', helping themselves to natural resources (minerals, rubber, tea / cocoa / coffee etc.) and obliging, rather than persuading, local populations to adopt Christianity.
All but ONE of these are genuine quotations representative of the mindset of such days; which ONE is NOT genuine?
'Onward Christian soldiers, marching as to war,
With the Cross of Jesus going on before! ...
Like a mighty army moves the Church of God:
Brothers, we are treading where the Saints have trod ... (Victorian hymn)
'It is our duty never to rest until God's work is accomplished around the world, in climes however hot or heathen'
'As o'er each continent and island
The dawn leads on another day,
The voice of prayer is never silent
Nor dies the strain of praise away.'
(Classic Victorian evening hymn: 'The day Thou gavest, Lord, is ended ...')
Colonists, particularly around the time of the Scramble for Africa, would bring 'guns and God' ~ or at least, 'railways and religion' or 'Christ and cricket'