As they approached, two outlying wings of the army detached themselves from the main body and started marching along the sides of the ditch, no doubt expecting at some point to find a crossing.
12 seconds sound clip from the Leiningen Versus the Ants (1948) classic radio play.
You can hear this line at 00:11:45 in the radio play.
Quote context
[...]
- Well, I... No! They haven't gotten to us yet... and they never will.
- The hostile army was approaching in perfect formation.
- No human battalions, however well-drilled, could ever hope to rival the precision of that advance.
- And during this hour-long flanking movement, the main army remained still.
- Across the scant twelve feet of ditch, I stared at them... and they stared back at me...
- A solid mass, every one as big as my thumb with reddish black body and long legs.
- Coming toward the ditch at a stumbling gallop was a singular being...
[...]