A paramilitary organization is a semi-militarized force whose organizational structure, tactics, training, subculture, and (often) function are similar to those of a professional military, but is not formally part of a country's armed forces.
Although similar, a quasi military organisation has more near identical to military aspects (IE: Militia, Private Army etc) whereas a paramilitary is its own (IE: Internal Security, SWAT etc).
Under the law of war, a state may incorporate a paramilitary organization or armed agency (such as a national police or a private volunteer militia) into its combatant armed forces. The other parties to a conflict have to be notified thereof.
Though a paramilitary is not a military force, it is usually equivalent to a military's light infantry force in terms of intensity, firepower, and organizational structure. A paramilitary may also commonly fall under the command of a military, even despite not being part of the military or play an assisting role for the military in times of war. Paramilitary forces can also include private military company missions. It is also known in international law, that when a paramilitary organization commits a terrorist act such as assassinating a united nation peace representative and mediator, this makes this so called "paramilitary organization" nothing but a terrorist organization.