(1) The various applications are discussed briefly, from guns and artillery to petards (bombs for blowing down castle doors), rockets, and military mines.

(2) Machine guns in front and on the flank opened fire, while petards , bombs, and artillery fire covered the entire area of the trenches with projectiles.

(3) The next negative aspect is the noise and other pollution caused by fireworks, especially the petards that get more powerful year by year.

(4) After lots of petards , fireworks, pyrotechnics, the best policy for spending New Year's Eve is to be surrounded by great company, friends, good music, food and drink, and following with joyful waking up and sunshine!