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Lahti L-39
The Lahti L-39 is a Finnish 20 mm anti-tank rifle used during the Second World War. It had excellent accuracy, penetration and range, but its size made transportation difficult. It was nicknamed "Norsupyssy" (" Elephant Gun"), and as tanks developed armor too thick for the Lahti to penetrate, its uses switched to long range sniping, tank harassment and with the L-39/44 fully automatic variant, employment as an improvised anti-aircraft weapon. Development Aimo Lahti had doubts about the original idea of a 13 mm anti-tank machine gun and started working on a 20 mm design. Officers who wanted smaller caliber anti-tank weapons believed that the muzzle velocities of 20 mm shells were insufficient to penetrate armor, and a weapon with a higher rate of fire and in a smaller caliber would prove useful. As a result, Lahti designed two competing anti-tank weapons: a 13.2 mm machine gun and a 20 mm rifle. After test firing both weapons in 1939, they found tha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Semi-automatic Firearm
A semi-automatic firearm, also called a self-loading or autoloading firearm ( fully automatic and selective fire firearms are also variations on self-loading firearms), is a repeating firearm whose action mechanism ''automatically'' loads a following round of cartridge into the chamber (self-loading) and prepares it for subsequent firing, but requires the shooter to ''manually'' actuate the trigger in order to discharge each shot. Typically, this involves the weapon's action utilizing the excess energy released during the preceding shot (in the form of recoil or high-pressure gas expanding within the bore) to unlock and move the bolt, extracting and ejecting the spent cartridge case from the chamber, re-cocking the firing mechanism, and loading a new cartridge into the firing chamber, all without input from the user. To fire again, however, the user must actively release the trigger, allow it to "reset", before pulling the trigger again to fire off the next round. As a result ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rate Of Fire
Rate of fire is the frequency at which a specific weapon can fire or launch its projectiles. This can be influenced by several factors, including operator training level, mechanical limitations, ammunition availability, and weapon condition. In modern weaponry, it is usually measured in rounds per minute (RPM or round/min) or rounds per second (RPS or round/s). There are three different measurements for the rate of fire: cyclic, sustained, and rapid. Cyclic is the maximum rate of fire given only mechanical function, not taking into account degradation of function due to heat, wear, or ammunition constraints. Sustained is the maximum efficient rate of fire given the time taken to load the weapon and keep it cool enough to operate. Finally, rapid is the maximum reasonable rate of fire in an emergency when the rate of fire need not be upheld for long periods. Overview For manually operated weapons such as bolt-action rifles or artillery pieces, the rate of fire is governed primarily ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
50 BMG
The .50 Browning Machine Gun (.50 BMG, 12.7×99mm NATO and designated as the 50 Browning by the C.I.P.) is a caliber cartridge developed for the M2 Browning heavy machine gun in the late 1910s, entering official service in 1921. Under STANAG 4383, it is a standard service cartridge for NATO forces as well as many non-NATO countries. The cartridge itself has been made in many variants: multiple generations of regular ball, tracer, armor-piercing (AP), incendiary, and saboted sub-caliber rounds. The rounds intended for machine guns are made into a continuous belt using metallic links. The .50 BMG cartridge is also used in anti-materiel rifles. A wide variety of ammunition is available, and the availability of match grade ammunition has increased the usefulness of .50 caliber rifles by allowing more accurate fire than lower quality rounds. History In response to the need for new anti-aircraft weaponry during World War I, John Browning developed the .50 BMG. He wante ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Finnish 1st Division (Continuation War)
The 1st Division () was a unit of the Finnish Army during the Continuation War. History The division was initially formed from reservists of the Lounais-Suomi military district and was intended to be used as the reserve of the General Headquarters. Before the onset of the war, one of its component regiments, Infantry Regiment 14, was transferred to the Åland islands under the command of the navy as part of Operation Kilpapurjehdus. The 14th regiment was replaced by Infantry Regiment 60. During the war, the 1st Division took part in the invasion of East Karelia as a component of the Finnish VII Corps that captured the city of Petrozavodsk. Later in the war, the division was transferred to the II Corps. Notable members * Lauri Törni Lauri Allan Törni (28 May 1919 – 18 October 1965), later known as Larry Alan Thorne, was a Finnish-born soldier who fought under three flags: as a Finnish Army officer in the Winter War and the Continuation War ultimately gaining a rank o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Armored Car (military)
A military armored (or armoured) car is a lightweight wheeled armored fighting vehicle, historically employed for reconnaissance, internal security, armed escort, and other subordinate battlefield tasks. With the gradual decline of mounted cavalry, armored cars were developed for carrying out duties used to be assigned to light cavalry. Following the invention of the tank, the armored car remained popular due to its faster speed, comparatively simplified maintenance and low production cost. It also found favor with several colonial armies as a cheaper weapon for use in underdeveloped regions. During World War II, most armored cars were engineered for reconnaissance and passive observation, while others were devoted to communications tasks. Some equipped with heavier armament could even substitute for tracked combat vehicles in favorable conditions—such as pursuit or flanking maneuvers during the North African Campaign. Since World War II the traditional functions of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landsverk L180, L181 And L182
The Landsverk L-180, L-181 and L-182 are a family of armored cars developed by the Swedish company AB Landsverk during the interwar years. They had a good international reputation for being fast, robust and reliable and were acquired in small numbers by Denmark, Estonia, Ireland and the Netherlands, among others. Design The different variants were similarly configured, but were built on different chassis; Büssing-NAG, Mercedes-Benz and Daimler-Benz truck chassis. (See ''Operators'') Armament These vehicles were also similarly armed, most commonly with a Bofors 37 mm or 20 mm Madsen autocannon but was also manufactured with other similar guns. The only exception, Finland, bought one L-182 and armed it with a 13.2 mm L-35/36 machine gun. (See ''Operators'') Engine In the same way, as several different chassis were used, different engines were also used, and where the make of the engine is known, they were manufactured by the same company as the chassis. (See ''Oper ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anti-aircraft Gun
Anti-aircraft warfare, counter-air or air defence forces is the battlespace response to aerial warfare, defined by NATO as "all measures designed to nullify or reduce the effectiveness of hostile air action".AAP-6 It includes surface based, subsurface ( submarine launched), and air-based weapon systems, associated sensor systems, command and control arrangements, and passive measures (e.g. barrage balloons). It may be used to protect naval, ground, and air forces in any location. However, for most countries, the main effort has tended to be homeland defence. NATO refers to airborne air defence as counter-air and naval air defence as anti-aircraft warfare. Missile defence is an extension of air defence, as are initiatives to adapt air defence to the task of intercepting any projectile in flight. In some countries, such as Britain and Germany during the Second World War, the Soviet Union, and modern NATO and the United States, ground-based air defence and air defence airc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Embrasure
An embrasure (or crenel or crenelle; sometimes called gunhole in the domain of gunpowder-era architecture) is the opening in a battlement between two raised solid portions ( merlons). Alternatively, an embrasure can be a space hollowed out throughout the thickness of a wall by the establishment of a bay. This term designates the internal part of this space, relative to the closing device, door or window. In fortification this refers to the outward splay of a window or of an arrowslit on the inside. In ancient military engineering, embrasures were constructed in towers and walls, in particular between the merlons and the battle. A loophole, arrow loop or arrowslit passes through a solid wall, and thus forms an embrasure of shooting, allowing archer or gunner weapons to be fired out from the fortification while the firer remains under cover. This type of opening was flared inward - that is: the opening was very narrow on the outside, but wide on the inside, so that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
KV-1 (tank)
The Kliment Voroshilov (KV) tanks are a series of Soviet heavy tanks named after the Soviet defence commissar and politician Kliment Voroshilov who operated with the Red Army during World War II. The KV tanks were known for their heavy armour protection during the early stages of the war, especially during the first year of the German invasion of the Soviet Union. In certain situations, even a single KV-1 or KV-2 supported by infantry could halt German formations. The German ''Wehrmacht'' at that time rarely deployed its tanks against KVs, as their own armament was too poor to deal with the "''Russischer Koloss''" – "Russian Colossus". The KV tanks were practically immune to the 3.7 cm KwK 36 and howitzer-like, short-barreled 7.5 cm KwK 37 guns mounted, respectively, on the early Panzer III and Panzer IV tanks fielded by the invading German forces. Until the Germans developed more effective guns, the KV-1 was invulnerable to almost any German weapon except the 8.8 cm Flak gun. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
T-34
The T-34 is a Soviet medium tank introduced in 1940. When introduced its 76.2 mm (3 in) tank gun was less powerful than its contemporaries while its 60-degree sloped armour provided good protection against anti-tank weapons. The Christie suspension was inherited from the design of American J. Walter Christie's M1928 tank, versions of which were sold turret-less to the Red Army and documented as "farm tractors", after being rejected by the U.S. Army. The T-34 had a profound effect on the conflict on the Eastern Front in the Second World War, and had a short lasting impact on tank design. After the Germans encountered the tank in 1941 during Operation Barbarossa, German general Paul Ludwig Ewald von Kleist called it "the finest tank in the world" and Heinz Guderian affirmed the T-34's "vast superiority" over German tanks. Alfred Jodl, chief of operations staff of the German armed forces noted in his war diary "the surprise at this new and thus unknown ''wunder''-armame ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lahti L-39 Being Used As An Anti-aircraft Weapon, 1942
Lahti (; sv, Lahtis) is a city and municipality in Finland. It is the capital of the region of Päijänne Tavastia (Päijät-Häme) and its growing region is one of the main economic hubs of Finland. Lahti is situated on a bay at the southern end of lake Vesijärvi about north-east of the capital city Helsinki, south-west of the Heinola town and east of Hämeenlinna, the capital of the region of Tavastia Proper (Kanta-Häme). It is also situated at the intersection of Highway 4 (between Helsinki and Jyväskylä) and Highway 12 (between Tampere and Kouvola), which are the most significant main roads of Lahti. In English, the Finnish word Lahti literally means ''bay''. Lahti is also dubbed the " Chicago of Finland" due to the early industries of both cities, when they were known as " slaughterhouse cities".Lahti on Suo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Counter-sniper Tactics
Counter-sniper tactics have evolved in sniper warfare to reduce the effectiveness of snipers. Reducing the risk of damage During the stalking phase of their attack, a sniper will, if time allows, try to identify high-value targets, such as senior officers or senior NCOs. They will do this by closely observing the behavior of the people in front of them. The intention is to identify who is in charge and then prepare to fire at them. It naturally follows that leaders should attempt to blend into the background by avoiding anything that distinguishes them from the most junior soldiers and attracts the interest of a sniper. In order to reduce a sniper's ability to damage the chain of command, doctrine and equipment need to prevent any observable "leadership" behaviors and signs. Insignia, e.g. rank insignia, should be subdued (i.e. dark or black as opposed to bright colors), camouflage colors on battledress, battledress identical for all ranks, military servants and rank-based luxur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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