The difficulty with describing equipment in the Hundred Years War is that it lasted a Hundred Years!* Equipment changed. That said, I have answered similar questions before; these answers should be what you are looking for.

Note that 'Man At Arms' is a specific term for a fully armoured soldier. Though they were often not titled knights, they fought like knights.

The previous answers are here:

• English Arms and Armour in the 100 Year's War - this focuses on Agincourt.

• Equipment through the 100 years war - this discusses how much equipment changed.

Please let me know if you have any follow up questions.

*actually more than that