wave the white flag

Then it was seen how perilous was the situation of the Boer snipers. . . . There was no escape for them save across the open. It says much for their courage that they took that perilous choice rather than wave the white flag, which would have ensured their safety.

I started in with a fine left-hander on his right eye. Liverpool had been a fighter once, but dissipation and bad company had taken the nerve out of him. In ten minutes I had him lying on the sand waving the white flag.