Military Rocket
In military terminology, a rocket is a self-propelled, generally unguided, weapon-system powered by a rocket engine. Though used primarily as medium- and long-range artillery systems, historically rockets have also seen considerable use as air-to-surface weapons, some use as air-to-air weapons, and even (in a few cases) as surface-to-air devices. Examples of modern surface-to-surface rocket systems include the Soviet BM-27 Uragan and the American M270 Multiple Launch Rocket System. In military parlance, a rocket differs from a missile primarily by lacking an active guidance system; early missiles became known as "guided rockets" or "guided missiles". Some rockets were developed as unguided systems and later upgraded to guided versions, like the GMLRS, and these generally retain the term "rocket" instead of becoming "missiles". Rockets or missiles that travel underwater, like the VA-111 Shkval, are known as "torpedoes", whatever their propulsion system. Early development The ...
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Katyusha Launcher Rear
Katusha or Katyusha is a diminutive of the Russian name Ekaterina or Yekaterina, the Russian form of Katherine or Catherine. Katusha or Katyusha may refer to: Military use *Katyusha rocket launcher, Soviet rocket launcher of World War II, named after the song *Tupolev SB, a Soviet medium bomber of World War II *Soviet K-class submarine, nicknamed Katyusha Other uses * ''Katyusha'' (moth), a synonym of the moth genus ''Lygephila'' in the family Erebidae * "Katyusha" (song), a Russian wartime song about a girl longing for her beloved *Team Katusha, a Swiss professional cycling team *Katusha Demidova, a Russian ballroom dancer * 1900 Katyusha, an asteroid *Katyusha, a character in the Japanese anime franchise Girls und Panzer , abbreviated as ''GuP'' or ''Garupan'' , is a Japanese anime franchise created by Actas which depicts a competition between girls' high schools practicing tank warfare as a sport. The series was directed by Tsutomu ...

Barrage (artillery)
In military usage, a barrage is massed sustained artillery fire (shelling) aimed at a series of points along a line. In addition to attacking any enemy in the kill zone, a barrage intends to suppress enemy movements and deny access across that line of barrage. The impact points along the line may be 20–30 yards/meters apart, with the total line length of the barrage zone anything from a few hundred to several thousand yards/meters long. Barrages can consist of multiple such lines, usually about 100 yards/meters apart, with the barrage shifting from one line to the next over time, or several lines may be targeted simultaneously. A barrage may involve a few or many artillery batteries, or even (rarely) a single gun. Typically each gun in a barrage, using indirect fire, will fire continuously at a steady rate at its assigned point for an assigned time before moving onto the next target, following the barrage's detailed timetable. Barrages typically use high-explosive shells, bu ...
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