Now, what does these writings actually mean ? Let's go through one by one.
1) Charles Martel
Charles Martel was the King of Francia (Modern day France), he is known in European history for one specific thing, he was the one who stopped the Islamic Caliphates advance into Western Europe in the battle of Tours in 732 CE. For this reason, he is revered and placed into a divine status in Christian extremist teachings.
2) Tours 732
The Battle of Tours in 732 CE, was perhaps the most defining battle in the history of Europe. The Muslim forces of the Umayyad Caliphate completely crushed the Christian Kingdoms of Spain and conquered all of Spain, and advanced unopposed towards conquering Western Europe. If we compare the balance of power during that time, the Ummayad Caliphate was the worlds sole Super Power, and militarily and technologically far more advanced than the Christian Kingdoms of Europe. The only Kingdom that was some what capable to put up a resistance to the mighty Caliphate in all of Europe was the Kingdom of Francia (France).
The battle initially went very well for the Muslims, the Caliphate was nearly victorious, but the soldiers in the Caliphate army got greedy seeing the war booty and wealth lying in the battlefield and disobeyed commander Abdul Rahman Al Ghafiqis orders and broke ranks to collect the wealth. Seeing this, the Christian forces rallied, and charged the Muslims, most of the Muslims were unarmed as they put down their weapons in order to secure as many wealth as they could. Shocked, the Caliphate soldiers fled the battle and brave Abdul Rahman Al Ghafiqi alone in a last effort, led a valiant charge against the Franks and embraced martyrdom.