One researcher I remember reading calculated the English were putting a thousand arrows a second into the air at Agincourt.
I think I recall Henry’s army was about 6,000 men, how many were archers I don’t know.
Wiki has a fun discussion on Agincourt numbers.
NB: My son the history guy says "automatic 'F'"if wiki is the sole source cited in his class.
https://en.wikipedia.org/wiki/Battle_of_Agincourt#Numbers_at_Agincourt
That said,6,000, a good number.
6,000 archers =1,000 arrows/ 1 second
6 archers= 1 arrow/ 1 sec
1 archer= 1 arrow/ 6 sec QUICK!
Guessing they are responding to wave assaults, also the mud was a HUGE factor slowing the French.
Do not overlook the supply train problem, that caused the death of the many a French Nobleman. (Fr. claims a war crime)And a huge loss of ransom$$$.
On campaign, arrows were bulk-packed in barrels and transported in wagons. Longbowmen might be issued with three sheaves of 24 arrows each to carry into combat, and during a long battle runners would be sent to bring more arrows from the wagons.
Yes, I confess, twas I that cribbed a few lines,"The fewer men, the greater share of honor." , to inspire my team to finish the damn job on time! And it was St Crispin's Day!(25 Oct) Without the bread & circus thing, they might fall asleep.
https://en.wikipedia.org/wiki/Battle_of_Agincourt#Numbers_at_Agincourt
John Keegan argues that the longbows' main influence on the battle at this point was injuries to horses: armoured only on the head, many horses would have become dangerously out of control when struck in the back or flank from the high-elevation long range shots used as the charge started
The English account in the Gesta Henrici says: "For when some of them, killed when battle was first joined, fall at the front, so great was the undisciplined violence and pressure of the mass of men behind them that the living fell on top of the dead, and others falling on top of the living were killed as well.
A very bad for French Grunts.