Jihad, that means in English striving or struggling, is of two types:
Self Jihad is that any Muslim should practice Jihad or self struggle to avoid doing wrong deeds and/or committing sins that are forbidden by Islam and by his community. It is also doing good things that Allah wants you to do, such as following the morals of Quran and prophet Muhammad (peace be upon him), reciting the Quran, helping the poor, striving to fulfill your family requirements, learning and studying useful sciences and arts, etc.
Regarding Military Jihad, it is licit only in two cases:
In both cases, Muslims (as in all other faiths) are commanded, by their religion, to be fair and just. They are forbidden; by Quran and prophet Muhammad teachings; to kill a woman, child, or an old man or any civilian. They are commanded not to be excessive in using force and not to terrify civilians. They are forbidden from spoiling the nature, cutting a tree, or polluting/poisoning air or water.
The above is general view about what is called Jihad (especially in Islam) and about those who are practicing Jihad and are called, recently, jihadists.
There aren't groups in ISLAM there is only ISLAM (Qur'an & sunnah) jihad means to strike and struggle for the sake of ALLAH. ISLAM came to the 21st century from the idol worshiping times by jihad, IF there is no jihad there would be no ISLAM.
Greater Jihad, which is an introspective journey to conquer your internal demons and follow the Divine Laws more closely than previously, is a practice to promote a person's piety. The greater Jihad is the struggle to follow Islam morals and teachings and prevent yourself from committing sins. (This is in contrast to Lesser Jihad, which is a social contest of wills.)Refer to related question: What are the two types of jihad in Islam?
The jihad movement started as a way to spread Islam throughout the world.
Jihad does not mean'holy war'. Jihad means 'struggle, striving'. Any action done in the way of Almighty Allah, by mouth (preaching Islam), spending money, or by physical means is Jihad in Islam. The greatest Jihad is fighting against one's own evil passions, being honest and just in daily routine matters is Jihad. Anyhow, if some force unjustly attacks Islam and tries to uproot it, the Muslim states must wage Jihad till peace is resored. It will be a holy war. Declaring Jihad in this situation is the responsibility of Muslim States. No individual or a group of Muslims is authorised to declare Jihad. These are the insane and mad people who kill innocent people in the name of Islam. They have nothing to do with Islam. Islam means 'peace', not war or killing. According to Islam, Killing of one innocent human is like killing the whole humans.
Robert Spencer, author of a number of books about the Muslim religion and American-Islam relations, hosts the blog Jihad Watch. On his blog, content regarding the ideas behind Islamic jihad are posted regularly.
No, it is not one of the five pillars of Islam.Refer to question below for more information on the five pillars of Islam and on Jihad.
The term for holy war in Islam is "jihad." Jihad can be interpreted in different ways, including as a struggle or striving for personal spiritual growth, as well as a physical struggle in defense of Islam.
The jihad movement started as a way to spread Islam throughout the world.
Jihad does not mean'holy war'. Jihad means 'struggle, striving'. Any action done in the way of Almighty Allah, by mouth (preaching Islam), spending money, or by physical means is Jihad in Islam. The greatest Jihad is fighting against one's own evil passions, being honest and just in daily routine matters is Jihad. Anyhow, if some force unjustly attacks Islam and tries to uproot it, the Muslim states must wage Jihad till peace is resored. It will be a holy war. Declaring Jihad in this situation is the responsibility of Muslim States. No individual or a group of Muslims is authorised to declare Jihad. These are the insane and mad people who kill innocent people in the name of Islam. They have nothing to do with Islam. Islam means 'peace', not war or killing.
Simply put, Jihad exists in Islam because the Qur'an demands it. However, it should be noted that there are two forms of jihad. One is an internal struggle to be true and faithful to Islam amidst all of the struggles and difficulties that the world presents. The second is the command to rise militarily in defense of Islam when Muslims are under attack, especially from non-Muslims. This second form of jihad is popularly considered the "holy war" type of jihad.
A struggle or conflict to spread Islam is a Jihad
Jihad is not one of the five pillars of Islam. The five pillars are Shahada (faith declaration), Salat (prayer), Zakat (charity), Sawm (fasting), and Hajj (pilgrimage). Jihad, which means striving or struggling, is an important concept in Islam but is not one of the pillars.