Celebrity endorsement via broadcast channels
In the run-up to the awareness day, hashtags #ArmedForcesDay and #SaluteOurForces were promoted on social media, and Snapchat geo-filters were used for the first time.
On Facebook alone there were more than 560,000 engagements on less than 40 Facebook posts, which reached 2.6 million people.
A promotional video was also shown on big screens in Network Rail stations across the country, on televisions on National Express coaches, as well as in the lobbies of corporate partners such as Aviva. The video was viewed on social media over 700,000 times.
Prime Minister Theresa May was one of the guests at the national event in Liverpool, where more than 200,000 people came to show their support.
The event included flypasts by the Red Arrows and the Battle of Britain Memorial Flight, parades, military bands and a visit to Liverpool docks by the Royal Navy’s type-23 frigate HMS Iron Duke.
May said: "I’ve seen first-hand the amazing job that the men and women of all three services do, whether helping to deal with the recent emergencies we have seen here in Manchester and London, or taking the fight to Daesh in Syria and Iraq."
She added: "It is right that we show our support, both by holding events such as this and ensuring that that those who serve or have served, and their families, have what they need."
The sentiment was echoed by defence secretary Sir Michael Fallon. He commented: "We owe a huge gratitude to the men and women of our Armed Forces and salute their service in keeping us safe each and every day."