signal rocket

At the signal rocket the enemy swept forward toward the canal, with companies of British sappers bearing scaling ladders and fascines of sugar cane.

From The Fight for a Free Sea: A Chronicle of the War of 1812 The Chronicles of America Series, Volume 17 by Ralph Delahaye Paine

In a moment a warning red signal rocket shot into the sky and burst, warning all local aircraft.

From The Black Tide by Arthur G. Stangland

Ralph asked him up to the house, but the young inventor said he wanted the quiet of his hotel room to work on his signal rocket idea, which he declared would amount to something yet.

From Ralph on the Overland Express The Trials and Triumphs of a Young Engineer by Allen Chapman

At that time he escaped but was afterwards pardoned; the signal rocket was to be fired from his storehouse in Cavite.

From The Katipunan or The Rise and Fall of the Filipino Commune by Francis St. Clair

“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