What does " that martinet's error " mean?
The officer," he reasoned, "will not make that martinet's error a second time. It is as easy to dodge a volley as a single shot. He has probably already given the command to fire at will. God help me, I cannot dodge them all!"
An appalling plash within two yards of him was followed by a loud, rushing sound, diminuendo, which seemed to travel back through the air to the fort and died in an explosion which stirred the very river to its deeps!
What does " that martinet's error " mean? Please..