So you have a Hungry Jungle. And then you have soldiers, guerillas, insurgents, etc. trekking through it. Suddenly, all hell breaks loose as two or more factions struggle against dwindling supplies, scarce food, the enemy at every corner, the elements, and of course, the jungle itself. Jungle Warfare is what it says, fighting that takes place in a remote jungle or lush tropical rainforest, usually on a remote island or somewhere far away from civilization. When there are civilians, they're usually confined to a small village, usually near a river.
In these kinds of situations, expect elite troops, usually those specialized or experienced in trekking through remote and hostile environments, sending patrols deep into remote enemy territory, rebels or enemy soldiers planting different kinds of booby traps, and communication and supply problems. If tanks are involved, expect them to be bogged down in mud during a monsoon, knocked out by anti-tank traps, or simply unable to plow through thick vegetation. Expect a mix of Scenery Porn and Scenery Gorn, depending on how bad the surrounding vegetation is removed, and with it the use of Flamethrowers or other forms of flame-based weapons. Often involves soldiers wearing camouflage over their uniforms either moving slowly through the jungle or waiting in ambush, as well as men, guns, or vehicles concealed by trees.
Much like Urban Warfare, Jungle Warfare can be a nightmare for any advancing army that doesen't have a firm grasp of the place. Even untrained militamen or under-equipped soldiers with a vast knowledge of the jungle can wreak havoc on even the most experienced and trained of soldiers venturing in. Unlike the former, the jungle itself can also be as much of a hazard on both friendly and enemy forces. Among these hazards include diseases like malaria and dysentery, local flora and fauna, and even the mere vastness of the jungle itself, where patrols can get lost simply from making a wrong turn in.
Compare and contrast with the aforementioned Urban Warfare, Winter Warfare, and Desert Warfare where fighting takes place in cities/towns, in cold, snowy conditions, and in scorching deserts, respectively, though there have been cases where this trope can overlap with the former (Manila during World War II and Hue City during The Vietnam War, for example). Thanks to the climate, a Battle in the Rain is expected almost half the time.
- Mobile Suit Gundam: The 08th MS Team involves Earth Federation Ground Forces fighting Zeon units in the thick and harsh jungles of Southeast Asia.
- Black Lagoon has the Lagoon Company teaming up with a NSA-backed special forces unit "Gray Fox" alongside Garcia and Fabiola to locate Roberta in the jungles of Myanmar. Gray Fox and Roberta fought each other to a near standstill.
- Armored Trooper VOTOMS second arc is the Kunmen Jungle War, which takes place in a jungle. The arc takes a lot of cues from the Vietnam War (especially as the anime originally aired in 1983, only a decade after Vietnam), including flamethrower boats and guerrillas striking from the foliage while being backed up technologically and logistically by a foreign power.
- The Action Prologue of Windtalkers is set in the jungles of the Solomon Islands, implied to be around late 1942 to mid-1943. As expected from the setting, there's Joe Enders' patrol being sent to hold a vital position, several Japanese ambushes, and Enders' squad running out of ammo supplies.
- The first portion of Saipan counts as well, with Japanese ambushes happening every other time Enders' squad advances further. And averted in the Final Battle, where there's no vegetation thanks to being set in the mountains of the island.
- Near the end of The Final Option, the Royal Hong Kong Police Force deploys the Special Duties Unit to a deserted island near Hong Kong to take out a corrupt DEA agent hiding in the forests, accompanied by Hong Kong Customs and Excise Service officers, primarily to delay the corrupt agent's ship from leaving Hong Kong waters. The problem is that they're confronted by an ex-Navy SEAL commando unit that went rogue after a black op mission in the Golden Triangle with the promise of being wealthy through the drug trade. The SDU gets into major trouble due to ambushes with Claymores and snipers shooting them in the arms/legs to hinder their progress through the island. Some of the SDU officers are forced to take cover in a ditch and provide suppressive fire with some of the HKCES officers in tow.
- Predator takes place in an unnamed Central American country almost entirely covered by jungle. The fighting between Dutch's rescue team and the guerillas involves standard infiltration tactics and a surprise attack. The battle against the title space alien uses tripwires, Claymore mines and physical traps reminiscent of the Vietnam War.
- The Thin Red Line, which focuses on members of the US Army as the trek their way through Guadalcanal's dense jungle in order to take the island from the Japanese Army.
- Kokoda, similar to The Thin Red Line above, has Allied soldiers fighting the Japanese in thick jungle in the South Pacific, except this time its the Australians fighting the Japanese forces in New Guinea.
- The entire Vietnam War segment in Forrest Gump is a textbook example, where pretty much all the characteristics of this trope are seen. Namely, we get Forrest's unit being sent on patrol deep into the jungle, an enemy waiting in camouflage, and the use of flame-based weapons (Napalm in this case).
- Pretty much all notable films set during The Vietnam War will feature this form of fighting one way or another, with the most notable examples being Platoon, Apocalypse Now, and Casualties of War.
- We Were Soldiers is an aversion, as the fighting takes place in highland where no trees are present.
- A Recycled In SPACE equivalent shows up in Star Wars episode three with the planet Felucia. While it only shows up for one short scene in the movie proper, it sees much more focus in the Expanded Universe.
- The finale of the 2016 Chinese film Operation Mekong takes place deep in the Myanmar jungle as the special operations group moves to hunt down the drug lord Naw Khar and his militia.
- Two of the Rambo movies, Rambo: First Blood Part II and Rambo IV, are set in Vietnam and Myanmar, respectively.
- The Missing in Action trilogy is all set in Vietnam. While the first film came out seven months before Rambo II, the series has been credibly accused of copying its plot since its script was based off of the original script for Rambo II with just enough details changed to avoid a lawsuit, and then the movie's release was sped up to get it out first.
- The Pacific has the first half of the series full of this trope. Guadalcanal and Cape Gloucester, as well as the beaches surrounding Peleliu's airfield, involve Marines struggling between the Japanese, shortage of supplies, disease, and the islands themselves.
- In Arrow, prior to the start of the series, Oliver spent several of his years stranded on the island of Lian Yu where he is caught up in the many dangers including militant groups and criminals. He eventually finds allies on the island and partakes in wars with the other side to thwart their plans.
- SEAL Team has several jungle operations in its second season, notably part of the Mexico deployment to hunt down Andreas Doza, and the Philippines deployment where Bravo Team goes up against both Chinese special forces and communist terrorists in the Filipino countryside.
- In the Animorphs novel "The Forgotten," the Animorphs are inadvertently trapped in the Amazon rainforest in the recent past after a mission to take the Yeerk Blade ship to the White House to expose the Yeerk invasion goes horribly wrong, and they have to fight off both the Yeerks and the jungle's inhabitants in order to return to their own time.
- The finale of Rainbow Six takes place deep in the Amazon rainforest, as Rainbow hunts down the top executives of Horizon Corporation and slaughters almost 35 of their men who choose to fight back. It helps that they have a heartbeat sensor that allows them to track each enemy through all the thick jungle foliage.
- George MacDonald Fraser's autobiography Quartered Safe Out Here is his account of his part in the Burma war of 1944-45, and folllows his platoon of Border Riflemen as they pursue the broken Japanese down through the Burmese jungle to Rangoon.
- Rising Storm has the Guadalcanal, Kobura, Maggot Hill, Phosphate Plant, Hanto, and Otori Shima maps, where US Marines and US Army troops battle against the Imperial Japanese army in thick jungles and low visibility. The only exceptions are Peleliu, Kwajalein, Betio, and Iwo Jima, thanks to constant artillery shelling burning down most vegetation enough to avert this from happening. Saipan, meanwhile, takes place in the middle of an urban area, rather than in the jungles of the island.
- Its sequel, Rising Storm 2: Vietnam, even moreso, thanks to all the maps being set in The Vietnam War. Maps like Long Tan, parts of Highway 14, parts of Cu Chi, An Lau Valley, and the lowest areas of Hill 937 are full of dense vegetation, and are taken full advantage of by the NVA and VC when defending against attacks by Southern Forces.
- Most of Medal of Honor: Pacific Assault takes place in the jungles of the South Pacific. Of course, the Japanese, who are more experienced in trekking through these jungles, use a number of tactics well-suited for the environment, including laying dead.
- Medal of Honor: Rising Sun also has Guadalcanal, with the addition of the China-Burma-India Theater as one of the late-game levels.
- Peleliu, and to a lesser extent, Makin, in Call of Duty: World at War, at least when the vegetation isn't razed by artillery fire or fighting takes place in or near Japanese holdouts. Okinawa is a downplayed example, as the environment is instead a sub-tropical rainforest, but a lot of the elements of this trope still apply.
- "Victor Charlie", "Crash Site", and "Payback" in Call of Duty: Black Ops, which is set against the backdrop of The Vietnam War .
- Empire Earth: The expansion's Pacific theater campaign has several maps taking place in dense jungle, one of which features disease outbursts, mines, and snipers.
- Total Annihilation: The Core Contingency campaign has a series of missions set on Lusch, a jungle planet with very thick forests and rivers that are a major impediment to ground operations. Hovercraft technology is introduced in this segment, which is invaluable in traversing the jungle terrain.
- The Metal Gear games have a few examples:
- Metal Gear 2: Solid Snake takes place in Zanzibar Land, a fictional jungle in Central Asia.
- Metal Gear Solid 3: Snake Eater takes place in the fictional Tselinoyarsk jungle, also in Central Asia. The novelization of Metal Gear Solid 4: Guns of the Patriots reveals that Zanzibar Land and Tselinoyarsk are the same place.
- Metal Gear Solid V: The Phantom Pain has its second area of operations be a large jungle on the Angola-Zaire border region. The area has been divided up between three Private Forces who have a "gentleman's agreement" not to intrude on each other's territories.
- Syphon Filter 3 goes into this territory with a pair of flashback missions that take place deep in the Costa Rican jungle.
- Splinter Cell: Pandora Tomorrow features this as its major gameplay change from the first game. Almost half the game's missions take place in the Indonesian jungle in broad daylight, so Fisher's stealth tactics require blending in with tall grass and foliage in addition to the usual dark shadows. The first flashback mission of the Essentials PSP game also takes place in Colombia as Fisher looks to rescue Doug Shetland from a FARC terrorist cell.
- The "Jungle" mission in Cuba in Goldeneye 1997, where the thick atmosphere makes visibility hard to see and enemies are packing the AR33 assault rifles, which are much more damaging than the previous guns used. The Wii remake changes the location from Cuba to Nigeria.
- Despite being set on a remote Pacific island, Bugs Bunny Nips the Nips averts this, as Bugs fights the Japanese forces on the island near the beaches as well as their base, rather than in the jungles.
- World War II has several examples, as mentioned above, mostly fought in the Pacific Theater and CBI, between the Allies and the Imperial Japanese Army and Navy. The most prominent examples include Singapore, Guadalcanal, Cape Gloucester, New Guinea, Leyte, and Burma.
- The Cold War has The Emergency and Konfrontasi, which had British-led military forces honed their fighting skills against the Malayan National Liberation Army and by Indonesia-backed separatists. The experience was later used by Australian and New Zealander forces in the Vietnam War, which led them to be nicknamed "Ghosts" by the Viet Cong and the North Vietnamese Army.
- Also mentioned above, The Vietnam War, where practically the majority of fighting takes place, at least when it isn't Hue City during the Tet Offensive.
- Jungle warfare theaters in the 21st century have mainly focused on anti-terrorist campaigns. The major hot spots are Islamic (with some communist and nationalist) insurgencies in Southeast Asia in the Philippines, Myanmar, Indonesia, and Thailand. India and Nigeria (and its immediate neighbors such as Niger and Cameroon) also have similar insurgencies raging in their jungle countrysides. Another region is South America which is rife with narco-terrorists such as the Shining Path in Peru and FARC (before they disbanded to be a political party) and the ELN in Colombia.