[ul]
[li][SIZE=4]Mil Mi-24 Hind (Russia)[/SIZE][/li][/ul]
The Mi-24 is one of the most widely-known assault helicopter gunships, attack helicopter and low-capacity troop transport in the world, and remains in service with at least 50 air arms. Although production of Mi-24 has been ceased in 1991, it is considered to be one of the best and most advanced attack helicopters ever made.
http://www.wonderslist.com/wp-content/uploads/2016/09/Russian-Air-Force-Mil-Mi-24-Hind.jpg
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[li][SIZE=4] Boeing AH-64D Longbow Apache (USA)[/SIZE][/li][/ul]
The Boeing AH-64 Apache is a four-blade, twin-turboshaft attack helicopter known to be the preeminent and most powerful anti-armor weapon system in the Gulf War. The latest version of AH-64D is the AH-64E Apache Guardian. Until 2012 it was designated as AH-64D Block III.
http://www.wonderslist.com/wp-content/uploads/2016/09/Boeing-AH-64D-Longbow-Apache-USA.jpg
[ul]
[li][SIZE=4]Agusta A129 Mangusta (Italy)[/SIZE][/li][/ul]
First ever dedicated attack helicopter to be produced in Western Europe. Agusta A129 Mangusta, one of the most advanced attack helicopters, is a two-seat, twin-engined, lightweight battlefield helicopter developed specifically for the anti-armor attack role.
http://www.wonderslist.com/wp-content/uploads/2016/09/Agusta-A129-Mangusta-Italy.jpg
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[li][SIZE=4]Denel AH-2 Rooivalk (South Africa)[/SIZE][/li][/ul]
The Rooivalk is a next-generation attack helicopter from Denel Aviation of South Africa. The AH-2 Rooivalk can carry a range of weapons depending on the mission profile. It is equipped with a 20-mm Armscor cannon, and carries 4 x 4 -round launchers for TOW or Denel ZT-6 Mokopa anti-tank missiles. It also carries launchers with 70-mm un-operated rockets in place of the missileshttp://www.wonderslist.com/wp-content/uploads/2016/09/Denel-AH-2-Rooivalk-South-Africa.jpg
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[li][SIZE=4]Kamov Ka-52 Hokum-B (Russia)[/SIZE][/li][/ul]
The newer, improved, two-seat version of the Ka-50, is one of the fastest and most advanced attack helicopters in the world. Kamov Ka-52 Hokum-B is a multi-role, incredibly strong all-weather attack helicopter. One of the most maneuverable, next-generation attack helicopters, capable operating in daytime and at night.
http://www.wonderslist.com/wp-content/uploads/2016/09/Kamov-Ka-52-Hokum-B-Russia.jpg
[ul]
[li][SIZE=4]AH-64E Apache Guardian (USA)[/SIZE][/li][/ul]
As far as best attack helicopters go, the American four-blade, twin-turboshaft with a tailwheel-type landing gear arrangement and a tandem cockpit for a two-man crew, Boeing AH-64E Apache Guardian is the most advanced ever built.
With a maximum speed of 300 km/h, AH-64E Apache Guardian has a 30-mm cannon and carries 16 AGM-114L Hellfire, 2 anti-tank missiles, four AIM-92 Stinger or two AIM-9 Sidewinder air-to-air missiles, two AGM-122 Sidearm anti-radiation missiles and 19-shot Hydra 70 rocket pod.
http://www.wonderslist.com/wp-content/uploads/2016/09/AH-64E-Apache-Guardian-USA.jpg
Others
http://www.10zap.com/wp-content/uploads/2017/05/The-Mi-24-Hind-758x505.jpg
http://www.russianhelicopters.aero/upload/im/resize/9db5a63e38f29c8bf82379cd087ced93.jpeg
http://economictimes.indiatimes.com/photo/47672102.cms
http://info-aviation.com/wp-content/uploads/2009/09/H-60G_Pave_Hawk11.jpg?w=640
http://www.malaysiandefence.com/wp-content/uploads/2015/08/56th_RQS.jpg?x80338
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[li]RAH-66 Comanche[/li][/ul]
On February 23, 2004, the U.S. Army announced their decision to cancel the RAH-66 Comanche program after determining the upgrades would be required for the RAH-66 to survive current anti-aircraft threats.
They also planned to use the program’s funds to speed up development of unmanned aerial vehicles (UAVs). The Comanche program cost approximately $6.9-billion USD at the time of its termination.
Helicopter Boeing-Sikorsky RAH-66 Comanche has a very powerful weapons, which allows a very effective control of large clusters of the enemy, including armored and aerial equipment. Armed with the model Boeing-Sikorsky RAH-66 Comanche is:
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[li]20-mm. automatic aircraft gun;[/li][li]Includes anti-tank missiles;[/li][li]Kit rockets;[/li][li]Set missiles for air combat means.[/li][/ul]
One of the most striking shortcomings of the system of arms Boeing-Sikorsky RAH-66 combat Comanche attack helicopter was missing arms package to fight the power of the enemy alive.
In the cockpit of military attack helicopters Boeing-Sikorsky RAH-66 Comanche can accommodate two people - a pilot and gunner, while, due to the fact that the vehicle belongs to a class of combat aircraft means carriage on board of persons and goods is not possible.
http://avia.pro/sites/default/files/images/839_rah-660.jpg