Wikipedia's first sentence called it “byzantine-arab battle fought between the rashidun army under khalid ibn al-walid”. Today it says “major battle in the muslim conquest of byzantine syria fought by the arab troops of the rashidun caliphate and”.
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Machine-checked against the full current article on 2026-08-03.
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The opening as it read in 2025
635 CE conflict between the Rashidun Caliphate and Byzantine Empire 32°27′N 35°37′E  /  32.450°N 35.617°E  / 32.450; 35.617 Belligerents Rashidun Caliphate Byzantine Empire Commanders and leaders Amr ibn al-As Khalid ibn al-Walid Abu Ubayda ibn al-Jarrah Shurahbil ibn Hasana Anas ibn Malik Theodore Trithyrius (identified in Muslim sources as Saqallar ibn Mithraq) Strength 30,000 (estimations) 50,000–80,000 (Arab sources) Casualties and losses A few hundreds to a few thousands 100.000 killed The Battle of Fahl ( Arabic : يوم فحل , romanized : Yawm Faḥl ), also known as the Battle of the Marshes ( Yawm al-Radagha ) and the Battle of Beisan ( Yawm Baysān ), was a major battle in the Muslim conquest of Byzantine Syria fought by the Arab troops of the Rashidun Caliphate and Byzantine forces at or near Pella (Fahl) and nearby Scythopolis (Beisan), both in the Jordan Valley , in December 634 or January 635. Byzantine troops smarting from their rout by the Muslims at the battle of Ajnadayn had regrouped in Pella or Scythopolis and the Muslims pursued them there. The Muslim cavalry faced difficulty traversing over the muddied grounds around Beisan as the Byzantines cut irrigation ditches to flood the area and stave off the Muslim advance. The Muslims ultimately defeated the Byzantines, who are held to have suffered enormous casualties. Pella was subsequently captured, while Beisan and nearby Tiberias capitulated after short sieges by detachments of Muslim troops.
This is Wikipedia's own text, saved in our repository. Their copy of it is revision 1292839335.
The opening as it stood in 2010
The Battle of Fahl or Battle of Pella was a Byzantine-Arab battle fought between the Rashidun army under Khalid ibn al-Walid ( The Sword of Allah ) and the Roman Empire under Theodore the Sacellarius (Saqalar), in Fahl (ancient Pella along the Jordan Valley of Syria ) in January 635 AD ( 13 AH ). The result was a clear victory for Khalid ibn al-Walid.
Red text was written in or rewritten since the previous snapshot. Their copy is revision 352682961.
The opening as it stood in 2015
The Battle of Fahl or Battle of Pella was an Arab–Byzantine battle fought between the Rashidun army under Khalid ibn al-Walid Saifullah (meaning: The Sword of Allah) and the Roman Empire under Theodore the Sacellarius (Saqalar), in Fahl (ancient Pella along the Jordan Valley of Jordan ) in January 635 AD (13 AH). The result was a clear victory for Khalid ibn al-Walid. Some Roman soldiers fled to Beisan.The cores of Sharhabeel ibn Hasana and 'Amr ibn al-'As later captured the fortress of Beisan.
Red text was written in or rewritten since the previous snapshot. Their copy is revision 669295662.
The opening as it stood in 2020 1 passage from the previous snapshot no longer appear
The Battle of Fahl , Battle of Pella or Battle of the Mud was an Arab–Byzantine battle fought between the Rashidun army under Khalid ibn al-Walid Saifullah (meaning: The Sword of Allah) and the East Roman Empire under Theodore the Sacellarius (Saqalar), in Fahl (ancient Pella along the Jordan Valley of Jordan ) in January 635 AD (13 AH). The result was a clear victory for Khalid ibn al-Walid. Some Byzantine soldiers fled to Beisan. The Corps of Sharhabeel ibn Hasana and 'Amr ibn al-'As later captured the fortress of Beisan.
Red text was written in or rewritten since the previous snapshot. Their copy is revision 946523993.
The opening as it stood on October 6, 2023 4 passages from the previous snapshot no longer appear
635 CE conflict between the Rashidun Caliphate and Byzantine Empire 32°27′N 35°37′E  /  32.450°N 35.617°E  / 32.450; 35.617 Belligerents Rashidun Caliphate Byzantine Empire Commanders and leaders Amr ibn al-As Khalid ibn al-Walid Abu Ubayda ibn al-Jarrah Shurahbil ibn Hasana Theodore Trithyrius (identified in Muslim sources as Saqallar ibn Mithraq) Strength 30,000 (estimations) 50,000–80,000 (Arab sources) Casualties and losses a few hundreds to a few thousands Heavy The Battle of Fahl ( ), also known as the Battle of the Marshes ( Yawm al-Radagha ) and the Battle of Beisan ( Yawm Baysān ), was a major battle in the Muslim conquest of Byzantine Syria fought by the Arab troops of the nascent Islamic caliphate and Byzantine forces at or near Pella (Fahl) and nearby Scythopolis (Beisan), both in the Jordan Valley , in December 634 or January 635.Byzantine troops smarting from their rout by the Muslims at the battle of Ajnadayn had regrouped in Pella or Scythopolis and the Muslims pursued them there.The Muslim cavalry faced difficulty traversing over the muddied grounds around Beisan as the Byzantines cut irrigation ditches to flood the area and stave off the Muslim advance.The Muslims ultimately defeated the Byzantines, who are held to have suffered enormous casualties.Pella was subsequently captured, while Beisan and nearby Tiberias capitulated after short sieges by detachments of Muslim troops.
Red text was written in or rewritten since the previous snapshot. Their copy is revision 1157504319.
Today
Wikipedia's first sentence called it “byzantine-arab battle fought between the rashidun army under khalid ibn al-walid”. Today it says “major battle in the muslim conquest of byzantine syria fought by the arab troops of the rashidun caliphate and”. Read the current article and compare.
2010
2015
2020
Oct '23
2025
Counts in the opening at each snapshot. Green: the word gained ground. Red: it was cut. Grey: no change.
What Wikipedia says this is
Every article opens by defining its subject. This one was redefined since 2010, and today's defining sentence is their current revision.
Then
byzantine-arab battle fought between the rashidun army under khalid ibn al-walid
Now
major battle in the muslim conquest of byzantine syria fought by the arab troops of the rashidun caliphate and
Struck red text is no longer in the article; dotted amber text was rewritten. Every revision id links to Wikipedia's copy; the text shown is our own saved copy. Data: /data. Wikipedia text is CC BY-SA; quoted for the record; not affiliated with Wikipedia.
