“The website contains 250,000 records of soldiers who fought in the Hundred Years War between 1369 and 1453, and includes the names of archers who served with Henry V at Agincourt.”
The work started in 2006 and is led by Professors Anne Curry and Adrian Bell. Curry is well known for her 2006 book on Agincourt and her view that the English weren’t outnumbered 4:1 but a mere 3:2. Coincidentally, she has a new book on Agincourt due in October.
The project web address is www.medievalsoldier.org and the database address is www.medievalsoldier.org/search.php. At present the database sever seems to be suffering from very high demand and is not responding well. So it might be worth delaying your visit until after the rush has died down.