signal rocket

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

Telephone wires were broken immediately, but the "S.O.S." was sent by signal rocket and power buzzer, and our artillery and machine guns replied at once.

From The Sherwood Foresters in the Great War 1914 - 1919 History of the 1/8th Battalion by W. C. C. Weetman

“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

If you see or hear anything of a suspicious nature, Andy," cautioned Mr. McKay, "here is a signal rocket.

From The Nameless Island A Story of some Modern Robinson Crusoes by Percy F. (Percy Francis) Westerman

A signal rocket from one of the batteries, now and then.

From Shenandoah Representative Plays by American Dramatists: 1856-1911 by Montrose Jonas Moses