signal rocket

Small had charge of the signal rocket, which the captain had, however, determined not to let off, unless they were first discovered by the pirates.

From The Pirate of the Mediterranean A Tale of the Sea by F.C. Tilney

From the bridge a signal rocket soared, hissing.

From The False Faces Further Adventures from the History of the Lone Wolf by Louis Joseph Vance

“Stand by there!” shouted ‘old Hankey Pankey’ to Adams, who had our return signal rocket all ready, slung on to a handspike for a stick.

From Young Tom Bowling The Boys of the British Navy by John B. Greene

As the troops started out at night, for their assault, a signal rocket went up from Washington.

From Incidents of the War: Humorous, Pathetic, and Descriptive by Alf Burnett

The officers there had plainly seen the signal rocket this time, and the green ball seemed to shoot up into the clouds from directly beneath the bow of the "Long Island."

From The Battleship Boys' First Step Upward or, Winning Their Grades as Petty Officers by Frank Gee Patchin