Certainly now that Bernard Cornwall's 'Lost Kingdom' seies has been televised. Saxons vs Danes should be considered. Certainly Afred his daughter Aethelflaed- the Lady of Mercia and his grandson Ethelstan have great potential. the great advantage of the so called dark ages is that armies of the combatants were not a large as in later periods.
As Graham Korn commented on the fryd is essential but like others commented mounted troops were also very common