[often in imperative] Stand ready for an attack, especially one before dawn or after dark.
- ‘The defenders were ordered to stand to.’
- ‘All British battalions in the front line of 28th Division were ordered to ‘stand to’.’
- ‘‘Stand to!’ shouted the Corporal.’
- ‘Ordered to ‘stand-to!’ just before dawn, the men would be assigned to stand on the fire step dug into the wall of the trench.’