Torn here between being at the the battle of Agincourt I still can't fathom the bravery of the English/Welsh/Scots Knights & Men at Arms outnumbered 3 to 1 and most suffering from dysentery and still stood their ground as the French knights charged on horseback.
The other would be with Howard Carter when he finally broke through into Tutankhamen's burial chamber. To be one of the first people to view artefacts that have not been seen for some three thousand, two hundred odd years, must have been amazing.