These archers join their pole-armed fellows in the cause of John de Vere, Earl of Oxford... and whomever he might be supporting this season!
These less well equipped fellows are intended to reflect more hastily armed Levy troops, as opposed to formal "Retinue" of a major Lord.
Archery was important during the Wars of the Roses, but not the battle winning force it (seemed) to be during the Hundred Years War.
That's probably due to combination of both sides having men so armed, and some degree of exaggeration of the effectiveness of Longbows stemming from the famous battles of Crecy, Potiers, and Agincourt... three major victories over a century of conflict.
They once again are distinguished by the "Tawney" of Oxford's livery.
"And the multitude of their arrows darkened the sky..." or not; ammunition could be limited. Accounts of battles in this era include the archers foraging for arrows to be re-used.