Where did Into the Breach come from?

Where did Into the Breach come from? The idiom step into the breach originated in the military. A breach is a gap in a wall or a gap in a line of defense through which the enemy may enter. The idea is that the person who steps into the breach puts himself between the item he is defending and disaster.

The idiom step into the breach originated in the military. A breach is a gap in a wall or a gap in a line of defense through which the enemy may enter. The idea is that the person who steps into the breach puts himself between the item he is defending and disaster.