FIRST CRUSADE - Byzantines were being invaded by Seljuk Turks and in 1095, they asked for help to the Pope Urban II. The Pope led the First Crusade, which took Jerusalem in 1099, and it was the most successful crusade in Europe.

Emperor Alexius I sent an embassy to Pope Urban II regarding the atrocities in Jerusalem and the growing threat of the Turks to Constantinople and the whole of Europe

Mar 1, 1095

https://www.tumblr.com/search/alexios%20i%20komnenos

Pope Urban II called a great council of the Church at Placentia, in Italy, to consider the appeal - decisions were deferred until later in the year

Apr 12, 1095

http://skepticism.org/timeline/november-history/9752-pope-urban-ii-appoints-bishop-le-puy-count-raymond-iv-lead-first-crusade.html

Pope Urban II called a great council of clergy and nobles to meet at Clermont in France called the Council of Clermont. He called for a crusade against the Infidels

Nov 27, 1095

Peter the Hermit took up the cry "God wills it!" and ordinary people join in the 'People's Crusade' - most were unarmed

1096

http://nucius.org/graphics-engravings/peter-the-hermit-c-1050-1115/

Armed forces gathered at Constantinople led by leaders such as Tancred and Godfrey of Bouillon to embark on the First Crusade

1096

Godfrey of Bouillon - http://www.nobility.org/2018/03/08/godfrey-bouillon-kills-saracen-giant-siege-nicaea/

Emperor Alexius I shipped the Peoples Crusade over the Bosphorus

1096

https://fineartamerica.com/featured/-the-crusaders-cross-the-bosphorus-mary-evans-picture-library.html

The Peoples Crusade were annihilated by the Turks in Anatolia

1096

https://www.alamy.com/stock-photo-peoples-crusade-or-popular-crusade-1096-135095608.html

Siege of Nicaea

1097

http://www.nobility.org/2018/03/08/godfrey-bouillon-kills-saracen-giant-siege-nicaea/

Battle of Dorylaeum

1097

https://www.alamy.com/stock-photo-first-crusade-burying-the-dead-after-the-battle-of-dorylaeum-anatolia-122584780.html

The Siege of Antioch

1097

https://en.wikipedia.org/wiki/Siege_of_Antioch

Stephen of Blois and numerous French crusaders flee the siege of Antioch with news of the arrival of Emir Kerboga of Mosul

1098

Bohemond I, elder son of Robert Guiscard, led the capture of Antioch

Jun 3, 1098

http://www.emersonkent.com/history_notes/bohemond_i.htm

Emir Kerboga of Mosul and his army of 75,000 lays siege to the crusaders led by Bohemond

Jun 5, 1098

http://totalwar-ar.wikia.com/wiki/Kerbogha

The siege of Arqah, near Tripoli

Feb 14, 1099

Raymond of Toulouse leads the crusaders from Antioch and to Jerusalem

Jun 13, 1099

https://en.wikipedia.org/wiki/Raymond_IV,_Count_of_Toulouse

The Battle of Orontes. The First Crusade wins a victory forcing Emir Kerboga to lift the siege of Antioch

Jun 28, 1099

The soldiers of the First Crusade successfully scale the walls of Jerusalem and take the Holy city

Jul 15, 1099

https://en.wikipedia.org/wiki/Siege_of_Jerusalem_(1099)

Pope Urban II dies, never hearing news of capture of Jerusalem

Jul 19, 1099