Trade

Trading is an action available in most Fire Emblem games. As the name suggests, it lets two characters trade their weapons and items. Trading can only be initiated with allied units you are adjacent to, allied units you've rescued, and (in Thracia 776) enemy units you've captured. Trading does not end a character's turn; they can still perform such commands as attacking, using staves, shoving, and others after trading, and mounted units can move again after trading.

Some tactical uses of trading include:
 * Having a wounded character take a vulnerary or other healing item from another character to restore their HP.
 * Re-equiping a unit who has already finished their turn by trading with them, then moving a different weapon to the top slot of their inventory (which will then automatically be equiped).
 * Taking a Sleep or Silence staff from a unit who already used it this turn, then using it again with the other unit to put more enemies to sleep or silence them.