The Peloponnese peninsula was the scene of fierce fighting and extensive devastation following the arrival of Ibrahim's Egyptian troops. Partly as a result of the atrocities committed by Ibrahim, the UK, France, and the Russian Empire decided to intervene in favor of the Greeks. The decisive naval Battle of Navarino was fought in 1827 off Pylos on the west coast of the Peloponnese, where a combined British, French and Russian fleet decisively defeated the Turko-Egyptian fleet. Subsequently, a French expeditionary corps cleared the last Turko-Egyptian forces from the peninsula in 1828. The city of Nafplion, on the east coast of the peninsula, became the first capital of the independent Greek state.