How To Use Signal flag In A Sentence

• Some came up anxiously, actually hoping they might be the lucky one; while others were indifferent; because there had been an interesting programme laid out for that morning's work, and they should hate to miss the "wigwagging" with signal flags; as well as more of Allan's trail talks, which were so great. The Boy Scouts' First Camp Fire or, Scouting with the Silver Fox Patrol
  0 0
• He towed her across the room, paused beside his desk to thrust the signal flags into a drawer, then towed her farther — to the tantalus. A Lady of His Own
  0 0
• Systems were developed for chumming the fish in the open ocean and pinpointing schools of fish with the help of land-based watchers and signal flags.
  0 0