Henry IV of HRE vs Qapaghan Qaghan

Henry IV defeated Saxon rebels at Langensalza in Thuringia. The victory temporarily ended the Saxon Rebellion, but the conflict resumed later. The battle demonstrated Henry's military capability early in his reign.

Pope Gregory VII excommunicated Henry IV after Henry attempted to depose the Pope. The excommunication freed Henry's subjects from their oaths of loyalty, leading to a rebellion by German princes. This forced Henry to seek reconciliation at Canossa.

Henry IV traveled to Canossa Castle in northern Italy to seek absolution from Pope Gregory VII. He stood barefoot in the snow for three days before the Pope lifted his excommunication. This event symbolized the power struggle between secular and religious authority.

Henry IV besieged Rome and captured the city. He was crowned Holy Roman Emperor by Antipope Clement III. Pope Gregory VII took refuge in the Castel Sant'Angelo and was rescued by Norman forces under Robert Guiscard, who sacked Rome.

Qapaghan Qaghan led military campaigns that expanded the Gokturk Khaganate's territory from the Great Wall of China to the Caspian Sea. He subjugated the Kyrgyz, Turgesh, and other steppe tribes, establishing Gokturk dominance over the eastern steppes.

Qapaghan Qaghan forced the Khitan and Tatar confederations to submit to Gokturk authority. He incorporated their cavalry into his army and used them as vassals in campaigns against China and other steppe peoples.

Qapaghan Qaghan defeated a Tang Chinese army near Qarabaliq, forcing the Tang to recognize Gokturk suzerainty over the Tarim Basin. This victory secured Gokturk control over the Silk Road trade routes for a decade.

Qapaghan Qaghan was killed in a battle against the Basmyl tribe, a former vassal that rebelled. His death led to a succession crisis and the eventual decline of the Gokturk Khaganate, as his son was unable to maintain control.