* Puerto Rico Trench, in the North Atlantic, is the deepest trench at

The song is a sorrowful rendition of the novel's story (" It's gone all quiet on the Western Front / Male Angels sigh / ghosts in a flooded trench / As Germany dies ").

The series is somewhat darker in tone than the other Blackadders ; it details the depredations of trench warfare as well as the infamous common perception of incompetence and life-wasting strategies of the top brass.

An oval or circular trench, 6 – 9 metres wide, 2-2. 5 metres deep, and 100 – 150 metres in circumference, is dug.

Half or more of the trench is filled with " green " ( unfired ) bricks which are stacked in an open lattice pattern to allow airflow.

The Challenger Deep is a relatively small slot-shaped depression in the bottom of a considerably larger crescent-shaped oceanic trench, which itself is an unusually deep feature in the ocean floor.

Usually, an expedient purpose-built fallout shelter is a trench ; with a strong roof buried by c. 1 m ( 3 ft ) of dirt.

The Great Rift Valley is a name given in the late 19th century by British explorer John Walter Gregory to the continuous geographic trench, approximately in length, that runs from northern Syria in Southwest Asia to central Mozambique in South East Africa.

Gothic fashion is often confused with Heavy Metal fashion and Emo fashion: outsiders often mistake fans of heavy metal for goth, particularly those who wear black trench coats or wear " corpse paint " ( a term associated with the black metal music scene ).

The conflict is often compared to World War I, in that the tactics used closely mirrored those of that conflict, including large scale trench warfare, manned machine-gun posts, bayonet charges, use of barbed wire across trenches, human wave attacks across no-man's land, and extensive use of chemical weapons such as mustard gas by the Iraqi government against Iranian troops and civilians as well as Iraqi Kurds.

The trench is about long but has an average width of only.

The trench is not the part of the seafloor closest to the center of the Earth.

The islands are part of the island arc that is formed on the over-riding plate, the Mariana Plate, on the western side of the trench.

The Pacific plate is being subducted under the islands, forming the trench.

The Pacific plate is subducted beneath the Mariana Plate, creating the Mariana trench, and ( further on ) the arc of the Mariana islands, as water trapped in the plate is released and explodes upward to form island volcanoes.

The Pacific is ringed by many volcanoes and oceanic trench es

The Philippine Trench ( also called the Mindanao Trench ) is a 1, 320-kilometer-long submarine trench found directly east of the Philippine Mobile Belt and is the result of a collision of tectonic plates.

Lying about north of Puerto Rico in the Atlantic Ocean at the boundary between the Caribbean and North American plates is the Puerto Rico Trench, the largest and deepest trench in the Atlantic.

The trench is long and about wide.

* The late 9th century BC siege system surrounding Tell es-Safi / Gath, Israel, consists of a 2. 5 km long siege trench, towers and other elements, and is the earliest evidence of a circumvallation system known in the world.

Eastward, the line of al-Ansariyah mountains is separated from the Jabal az Zawiyah range and the plateau region by the Al Ghab valley, a fertile, irrigated trench crossed by the meandering Orontes River.

It is also a major feature of the fortifications in trench warfare ( as a wire obstacle ).

German and Allied armies produced essentially a matched pair of trench lines from the Swiss border in the south to the North Sea coast of Belgium.

The poem is sometimes viewed as an anachronism ; It spoke of glory and honour in a war that has since become synonymous with the futility of trench warfare and the wholesale slaughter produced by 20th century weaponry.

The crater served two purposes: it could destroy or breach the enemy's trench and, by virtue of the raised lip that they produced, could provide a ready-made " trench " closer to the enemy's line.

The first commercially marketed water balloon was produced by Edgar Ellington in 1950, while trying to invent a waterproof sock to solve the disease known as trench foot.

Other war materials produced included shells, mobile workshops for the Royal Engineers, and trench mortars.

This produced a continuous front line of trench fortifications more than 200 miles long, which by the following spring extended from the coast to the Swiss border.

It joined the United Nations troops on the front lines during the stalemate of the second half of the war, with constant, low-level fighting and trench warfare against the People's Volunteer Army of China that produced little gain for either side.

In World War II it produced light gun ammunition, medium gun ammunition, heavy ammunition, land mines and trench mortar ammunition for the Army ; medium and large bombs for the RAF ; and, 20 mm and other small arms ammunition for all three services.

Sighting a line from the bridge to a small field directly to the side, I pitched the tent that evening on the stateless `` line '', digging a small trench around it as best I could with a toy spade donated by a neighborhood child.

The practices of total war, developed by Sherman in Georgia, the experimental use of the first usable predecessor of the machine gun and of trench warfare around Petersburg, all foreshadowed World War I in Europe.

During the First World War, on the Western front, the two sides had been locked in a trench war, where kill zones by overlapping fire of machine guns and barbed wire prevented either side from breaking through.

The Reichswehr was influenced by its analysis of pre-war German military thought, in particular the infiltration tactics which at the end of the war had seen some breakthroughs in the Western Front's trench war, and the maneuver warfare which dominated the Eastern Front.

In both the naval and land campaigns of World War I, FEBAs, FLOTs and FLETs could often be identified by eye ( for example, in France and Belgium, defined by opposing defensive trench systems ).

Because of their small size and limited projectile penetration compared to high-power rifle rounds, submachine guns are commonly favored by military, paramilitary and police forces for close-quarters engagements such as inside buildings, in urban areas or in trench complexes.

General von Schleicher and his wife were gunned down in their Berlin home by three men dressed in black trench coats and wearing black fedoras.

The conflict has been compared to World War I in terms of the tactics used, including large scale trench warfare with barbed wire stretched across trenches, manned machine-gun posts, bayonet charges, human wave attacks across a no-man's land, and extensive use of chemical weapons such as mustard gas by the Iraqi government against Iranian troops, civilians, and Iraqi Kurds.

* Trench knife: Purpose-made or improvised knives, intended for close-quarter fighting, particularly in trench warfare characterized by a d-shaped integral hand guard.

Xenophyophores have been found in the trench by Scripps Institution of Oceanography researchers at a record depth of below the sea surface.

Finally, the immensely traumatic nature of the experience dashed basic assumptions: realism seemed bankrupt when faced with the fundamentally fantastic nature of trench warfare, as exemplified by books such as Erich Maria Remarque's All Quiet on the Western Front ( 1929 ).

Injuries or wounds which do not qualify for award of the Purple Heart include frostbite or trench foot injuries ; heat stroke ; food poisoning not caused by enemy agents ; chemical, biological, or nuclear agents not released by the enemy ; battle fatigue ; disease not directly caused by enemy agents ; accidents, to include explosive, aircraft, vehicular, and other accidental wounding not related to or caused by enemy action ; self-inflicted wounds ( e. g., a soldier accidentally fires their own gun and the bullet strikes his or her leg ), except when in the heat of battle, and not involving gross negligence ; post-traumatic stress disorders ; and jump injuries not caused by enemy action.

The advent of massed, rapid firepower of the machine gun, submachine gun and the rifled artillery piece was so quick as to outstrip the development of any way to attack a trench defended by riflemen and machine gunners.

They would then dig a trench towards the town in a zigzag pattern so that it could not be enfiladed by defending fire.