Howitzer groups called batteries. The English word ""howitzer"" comes from the Czech word ""houfnice"", from "houf", "crowd", and "houf" is in turn a borrowing from the Middle High German word "Hūfe" or "Houfe" (modern German "Haufen"), meaning "heap". "Haufen", sometimes in the compound "Gewalthaufen", also designated a pike square formation in German. In the Hussite Wars of the 1420s and 1430s, the Czechs used short barreled ""houfnice"" cannons to fire at short distances into crowds of infantry, or into charging heavy cavalry, to make horses shy away. The word was rendered into German as "aufeniz" in the earliest attested use in
Gun laws in the Czech Republic and mass meetings. The Ministry of the Interior officially recommends carrying non-lethal weapons such as pepper sprays, paralyzers, or gas pistols as means of self-defense The Czech penal code defines "weapon" as ""anything that may make an attack against the person more severe"". Although there are no restrictions on possession and carrying of weapons, their use in commission of a crime is punishable by stiffer sentences. For example, blackmail carries six months to four years imprisonment, but blackmail with a weapon carries four to eight years imprisonment. Gun laws in the Czech Republic Gun laws in the Czech Republic are