African people caught onto that one quite quickly - particularly the irony of it all.
A parody of the hymn “Onward Christian Soldiers” reads
”Onward Christian Soldiers, into pagan lands,
Prayer books in your pockets, rifles in your hands,
Bring the gladsome tidings, where trade might be done,
Spread your peaceful Gospel, with the Maxim Gun”.
Both the point of a Roman sword and the muzzle of Maxim Gun proved to be very effective methods of converting the “heathen.”