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Fort Gorges
Fort Gorges is a former United States military fort built on Hog Island Ledge in Casco Bay, Maine. Built from 1858 to 1864, no battles were fought there and no troops were stationed there. Advancing military technology, including iron clad ships and long range guns, made the fort obsolete before it could be used. The fort is now a park, accessible only by boat. It was added to the National Register of Historic Places in 1973. . History Following the War of 1812, the United States Army Corps of Engineers proposed that a fort be built on Hog Island Ledge, in Casco Bay at the entrance to the harbor at Portland, Maine. It was part of the third system of US fortifications. Named for the colonial proprietor of Maine, Sir Ferdinando Gorges, it was constructed to support existing forts, including Fort Preble in South Portland and Fort Scammel built on nearby House Island in 1808. Congress, however, did not fund construction of Fort Gorges until 1857. The walls of the fort were beg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fort George (Castine, Maine)
Fort George (also sometimes known as Fort Majabigwaduce, Castine, or Penobscot) was a palisaded Earthworks (engineering)#Military use, earthwork fort built in 1779 by Great Britain during the American Revolutionary War in Castine, Maine. Located at a high point on the Bagaduce Peninsula, the fort was built as part of an initiative by the British to establish a new colony called New Ireland (Maine), New Ireland. It was the principal site of the British defense during the Massachusetts-organized Penobscot Expedition, a disastrous attempt in July and August of 1779 to retake Castine in response to the British move. The British re-occupied Castine in the War of 1812 from September 1814 to April 1815, rebuilding Fort George and establishing smaller forts around it, again creating the New Ireland colony. The remains of the fort, now little more than its earthworks, are part of a state-owned and town-maintained park. Description and history Fort George is today a roughly square earthw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Congress
The United States Congress is the legislature of the federal government of the United States. It is bicameral, composed of a lower body, the House of Representatives, and an upper body, the Senate. It meets in the U.S. Capitol in Washington, D.C. Senators and representatives are chosen through direct election, though vacancies in the Senate may be filled by a governor's appointment. Congress has 535 voting members: 100 senators and 435 representatives. The U.S. vice president has a vote in the Senate only when senators are evenly divided. The House of Representatives has six non-voting members. The sitting of a Congress is for a two-year term, at present, beginning every other January. Elections are held every even-numbered year on Election Day. The members of the House of Representatives are elected for the two-year term of a Congress. The Reapportionment Act of 1929 establishes that there be 435 representatives and the Uniform Congressional Redistricting Act requires ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naval Mine
A naval mine is a self-contained explosive device placed in water to damage or destroy surface ships or submarines. Unlike depth charges, mines are deposited and left to wait until they are triggered by the approach of, or contact with, any vessel or a particular vessel type, akin to anti-infantry vs. anti-vehicle mines. Naval mines can be used offensively, to hamper enemy shipping movements or lock vessels into a harbour; or defensively, to protect friendly vessels and create "safe" zones. Mines allow the minelaying force commander to concentrate warships or defensive assets in mine-free areas giving the adversary three choices: undertake an expensive and time-consuming minesweeping effort, accept the casualties of challenging the minefield, or use the unmined waters where the greatest concentration of enemy firepower will be encountered. Although international law requires signatory nations to declare mined areas, precise locations remain secret; and non-complying individ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Submarine
A submarine (or sub) is a watercraft capable of independent operation underwater. It differs from a submersible, which has more limited underwater capability. The term is also sometimes used historically or colloquially to refer to remotely operated vehicles and Autonomous underwater vehicle, robots, as well as medium-sized or smaller vessels, such as the midget submarine and the wet sub. Submarines are referred to as ''boats'' rather than ''ships'' irrespective of their size. Although experimental submarines had been built earlier, submarine design took off during the 19th century, and they were adopted by several navies. They were first widely used during World War I (1914–1918), and are now used in many navy, navies, large and small. Military uses include attacking enemy surface ships (merchant and military) or other submarines, and for aircraft carrier protection, Blockade runner, blockade running, Ballistic missile submarine, nuclear deterrence, reconnaissance, conventio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War II
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing military alliances: the Allies and the Axis powers. World War II was a total war that directly involved more than 100 million personnel from more than 30 countries. The major participants in the war threw their entire economic, industrial, and scientific capabilities behind the war effort, blurring the distinction between civilian and military resources. Aircraft played a major role in the conflict, enabling the strategic bombing of population centres and deploying the only two nuclear weapons ever used in war. World War II was by far the deadliest conflict in human history; it resulted in 70 to 85 million fatalities, mostly among civilians. Tens of millions died due to genocides (including the Holocaust), starvation, ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parrott Rifle
The Parrott rifle was a type of muzzle-loading rifled artillery weapon used extensively in the American Civil War. Parrott rifle The gun was invented by Captain Robert Parker Parrott, a West Point graduate. He was an American soldier and inventor of military ordnance. He resigned from the service in 1836 and became the superintendent of the West Point Foundry in Cold Spring, New York. He created the first Parrott rifle (and corresponding projectile) in 1860 and patented it in 1861.Pritchard Jr, Russ A.Civil War Weapons and Equipment, p.82. Globe Pequit Press, 2003. . Daniel Treadwell, who developed a method for making built-up guns in early 1840s, tried to claim that his patent infringed on an earlier one, but in 1866 S.D.N.Y. court dismissed it, deciding that Treadwell's claim was invalidated by a 1843 British patent to John Frith. Parrotts were manufactured with a combination of cast and wrought iron. The cast iron made for an accurate gun, but was brittle enough to suffer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Casemates
A casemate is a fortified gun emplacement or armored structure from which guns are fired, in a fortification, warship, or armoured fighting vehicle.Webster's New Collegiate Dictionary When referring to antiquity, the term "casemate wall" means a double city wall with the space between the walls separated into chambers, which could be filled up to better withstand battering rams in case of siege (see Antiquity: casemate wall). In its original early modern meaning, the term referred to a vaulted chamber in a fort, which may have been used for storage, accommodation, or artillery which could fire through an opening or embrasure. Although the outward faces of brick or masonry casemates proved vulnerable to advances in artillery performance, the invention of reinforced concrete allowed newer designs to be produced well into the 20th century. With the introduction of ironclad warships, the definition was widened to include a protected space for guns in a ship, either within the hu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rodman Gun
Drawing comparing Model 1844 8-inch columbiad and Model 1861 10-inch "Rodman" columbiad. The powder chamber on the older columbiad is highlighted by the red box. The Rodman gun is any of a series of American Civil War–era columbiads designed by Union artilleryman Thomas Jackson Rodman (1815–1871). The guns were designed to fire both shot and shell. These heavy guns were intended to be mounted in seacoast fortifications. They were built in 8-inch, 10-inch, 13-inch, 15-inch, and 20-inch bore. Other than size, the guns were all nearly identical in design, with a curving bottle shape, large flat cascabels with ratchets or sockets for the elevating mechanism. Rodman guns were true guns that did not have a howitzer-like powder chamber, as did many earlier columbiads. Rodman guns differed from all previous artillery because they were hollow cast, a new technology that Rodman developed that resulted in cast-iron guns that were much stronger than their predecessors. Casting file:R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brick
A brick is a type of block used to build walls, pavements and other elements in masonry construction. Properly, the term ''brick'' denotes a block composed of dried clay, but is now also used informally to denote other chemically cured construction blocks. Bricks can be joined using mortar, adhesives or by interlocking them. Bricks are usually produced at brickworks in numerous classes, types, materials, and sizes which vary with region and time period, and are produced in bulk quantities. ''Block'' is a similar term referring to a rectangular building unit composed of similar materials, but is usually larger than a brick. Lightweight bricks (also called lightweight blocks) are made from expanded clay aggregate. Fired bricks are one of the longest-lasting and strongest building materials, sometimes referred to as artificial stone, and have been used since circa 4000 BC. Air-dried bricks, also known as mud-bricks, have a history older than fired bricks, and have an additi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Granite
Granite () is a coarse-grained (phaneritic) intrusive igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly cools and solidifies underground. It is common in the continental crust of Earth, where it is found in igneous intrusions. These range in size from dikes only a few centimeters across to batholiths exposed over hundreds of square kilometers. Granite is typical of a larger family of ''granitic rocks'', or ''granitoids'', that are composed mostly of coarse-grained quartz and feldspars in varying proportions. These rocks are classified by the relative percentages of quartz, alkali feldspar, and plagioclase (the QAPF classification), with true granite representing granitic rocks rich in quartz and alkali feldspar. Most granitic rocks also contain mica or amphibole minerals, though a few (known as leucogranites) contain almost no dark minerals. Granite is nearly alway ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fort Sumter
Fort Sumter is a sea fort built on an artificial island protecting Charleston, South Carolina from naval invasion. Its origin dates to the War of 1812 when the British invaded Washington by sea. It was still incomplete in 1861 when the Battle of Fort Sumter began the American Civil War. It was severely damaged during the war, left in ruins, and although there was some rebuilding, the fort as conceived was never completed. Since the middle of the 20th century, Fort Sumter has been open to the public as part of the Fort Sumter and Fort Moultrie National Historical Park, operated by the National Park Service. The building of Fort Sumter Named after General Thomas Sumter, a Revolutionary War hero, Fort Sumter was built after the 1814 Burning of Washington during the War of 1812 as one of the third system of U.S. fortifications, to protect American harbors from foreign invaders such as Britain. Built on an artificial island in the middle of the channel that provides Charlesto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chief Of Engineers
The Chief of Engineers is a principal United States Army staff officer at The Pentagon. The Chief advises the Army on engineering matters, and serves as the Army's topographer and proponent for real estate and other related engineering programs. The Chief of Engineers is the senior service engineer for the Department of Defense, responsible for integrating all aspects of combat, general and geospatial engineering across the Joint Force. The Chief of Engineers also commands the United States Army Corps of Engineers. As commander of the US Army Corps of Engineers, the Chief of Engineers leads a major Army command that is the world's largest public engineering, design and construction management agency. This office defines policy and guidance, and it plans direction for the organizations within the Corps. The Chief of Engineers is currently a lieutenant general billet but in the past has been held by field grade officers as low as major. Civilian oversight of the Chief of Enginee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
