Complex sentence: Two days after the French capitulation, he flew from Bordeaux to Bayonne and boarded a ship to England, where he joined the Royal Air Force Volunteer Reserve and later was posted to the 310th Czechoslovak Squadron.
Split into simpler sentences: Two days after the capitulation of France he flew from Bordeaux to Bayonne and boarded a ship to England. There he joined the Royal Air Force Volunteer Reserve and was later posted to 310 Czechoslovak Squadron.