The play centres on the experiences of eight unionist Ulstermen who volunteer to serve in the 36th (Ulster) Division at the beginning of the First World War.
It explores how both the Boyne and the Somme have come to have a significant place in Northern Ireland unionist consciousness.
Stylistically typical of McGuinness's art, the narrative also decentres the constructed ideals of homosocial institutions, such as the military.
The play in general has many themes running through it, including homosexuality, homophobia, the inner conflict of self-respect, bravery and patriotism.
The play subsequently opened in London at the Hampstead Theatre in July 1986, directed by Michael Attenborough.