“NGE TV, Episode 6: “Showdown in Tokyo-3”/”Rei-3””, 1995-08-11 (; backlinks):
Continuing from the previous episode, the Angel Ramiel is drilling down into the GeoFront to attack Nerv HQ directly. After Shinji barely survived a direct confrontation with it, Misato devises a plan to have Eva-00 and Eva-01 defeat the Angel by sniping it from a distance using a positron rifle which requires the total electric output of Japan to power up…Misato codenames the plan she creates to defeat the Angel Ramiel as “Operation Yashima”.
This is named after the Battle of Yashima which occurred in 1185 in medieval Japan, which also included a feat of conspicuously talented archery.