WWII: The Long Road Home underwent a 3 year production, with pre-production starting in October 2014 and filming wrapping in early May 2017. In 2016, production was halted for six months to allow for Hasler to focus on his GCSE exams.
Director Elliott Hasler refuses to provide details on how certain scenes were filmed, in particular the VE-Day scene in Trafalgar Square, simply stating it was created using "smoke and mirrors" when asked.
Hasler has cited 'The Thin Red Line' as being his main inspiration for the overall look and feel of 'Charlie's Letters'. 'The Thin Red Line' also happens to be one his his personal favourites.
The real Charles Standing, on whom the film is based, never collected his medals after he returned to England, wishing instead to forget about his wartime experiences and just live a normal life.
For the film's hanging scene, actor Luigi Patti del Pirano li Castri was actually strung up to the tree, using a harness and a separate piece of rope to replicate the noose. Director Elliott Hasler said that "we had to actually string him up, because by showing a full body shot of Luigi hanging in such a low budget film, the audience will be suspended in greater disbelief and really wonder; 'how did they do that?'"