Turks

History
The Turks is the unofficial nickname of the the Investigation Sector of the General Affairs Department of the Shinra Electric Power Company. They work inside the Department of Public Safety under Heidegger. The Turks perform black ops on behalf of the corporation, including kidnappings and assassinations. One of their main functions is to "recruit" SOLDIER candidates by force.

Their main enemies were a force known as AVALANCHE, an extremeist eco-terrorist group in the series' prequel, Before Crisis. And later on, they face a rebirth of AVALANCHE, which is much smaller, led by Barret Wallace. (although, despite being enemies, the Turks worked together with the latter form of AVALANCHE in Wutai, to defeat Don Corneo.

After teh fall of the Shin-Ra empire, after the Turks allowed AVALANCHE to stop the evil they were doing, the group stayed with the president, Rufus Shinra, to serve as his bodyguards, aiding him in his mission to "repay Shinra's debt from putting the world to it's weakened state"

Description
The Turks usually wear navy blue business suits and ties. In the Compilation, their color seems to have been changed to plain black. Their suits and weapons are similar to the weapons that the Japanese crime gangs known as Yakuza use, as most of the weapons, such as katana, shuriken, and kunai, originated from Japan.

Beign one of the few groups in the Final Fantasy series who uses modern weapons, they have a small following of their own, which was a possible reason for making a prequel to FFVII centerign around them.

Source: http://finalfantasy.wikia.com/wiki/Turks

Common Weapons
As mentioned before, most of the Turks are seen with Japanese swords and knives, due to a basis on the Yakuza. However, they bring more than swords on the battlefront.

Turks vs. Project Militia
To be comign at a theater near you.