The daredevils performed an array of jaw-dropping moves to thrill onlookers.
There were also military parades, live music and displays throughout the day as well as lots of stalls and entertainment. A Royal Navy parachute drop was another highlight of this fantastic event.
See pictures below of the Red Arrows display from the event:
5. Red Arrows. Portsmouth's Armed Forces Day
Red Arrows. Portsmouth's Armed Forces Day, Southsea Common Picture: Chris Moorhouse (080624-51) Photo: Chris Moorhouse
6. Red Arrows. Portsmouth's Armed Forces Day
Red Arrows. Portsmouth's Armed Forces Day, Southsea Common Picture: Chris Moorhouse (080624-46) Photo: Chris Moorhouse
7. Red Arrows. Portsmouth's Armed Forces Day
Red Arrows. Portsmouth's Armed Forces Day, Southsea Common Picture: Chris Moorhouse (080624-45) Photo: Chris Moorhouse
8. Red Arrows at Armed Forces Day
Red Arrows at Armed Forces Day over Southsea Common Photo: Jeremy Thomas