Byzantine–Bulgarian wars: The Bulgarians defeated Byzantine forces at the Battle of the Gates of Trajan near present-day Ihtiman, with Emperor Basil II barely escaping.

The Byzantine–Bulgarian wars were a series of conflicts fought between the Byzantine Empire and Bulgaria which began after the Bulgars conquered parts of the Balkan peninsula after 680 AD. The Byzantine and First Bulgarian Empire continued to clash over the next century with variable success, until the Bulgarians, led by Krum, inflicted a series of crushing defeats on the Byzantines. After Krum died in 814, his son Omurtag negotiated a thirty-year peace treaty. Simeon I had multiple successful campaigns against the Byzantines during his rule from 893 to 927. His son Peter I negotiated another long-lasting peace treaty. His rule was followed by a period of decline of the Bulgarian state.

The Byzantine Empire, also known as the Eastern Roman Empire, was the continuation of the Roman Empire centred on Constantinople during late antiquity and the Middle Ages. Having survived the events that caused the fall of the Western Roman Empire in the 5th century AD, it endured until the fall of Constantinople to the Ottoman Empire in 1453. The term 'Byzantine Empire' was coined only after its demise; its citizens used the term 'Roman Empire' and called themselves 'Romans'.

The Battle of the Gates of Trajan was a battle between Byzantine and Bulgarian forces in the year 986.

Ihtiman is a town in western Bulgaria, part of Sofia Province. It is located in the Ihtiman Valley of the Ihtimanska Sredna Gora mountain range and lies in a valley 48 km from Sofia and 95 km from Plovdiv, close to the Trakiya motorway.