Watch: Reserves Day 2021 – A Celebrity Thank You Posted by PFI_AdminMal | Jun 23, 2021 | Armed Forces Community, Community and Support, Defence and Military Affairs, Events and Media, Latest News, Reserves | 0 | > Today marks the annual Reserves Day celebration as part of the wider Armed Forces Week. The Defence Relationship Management Team have included a series of messages to say thank you, including this one below from an array of celebrities.