"Fortitude is basically readiness to die or, more accurately, readiness to fall, to die, in battle."
And speaking of falling in battle, here is how the Apostles died (from the Catholic Encyclopedia)
Peter - Crucified upside-down
Andrew - Bound to a cross in the shape of an X
James the Greater - Beheaded
James the Lesser - Thrown from the Temple and beaten to death
Bartholomew (or Nathaniel) - Flayed alive and crucified or beheaded
Jude (or Thaddeus) - Beaten to death
Matthew - burned, stoned, or beheaded
Philip - Martyrdom
Simon - Sawed in half or crucifixion
Thomas - Stabbed with a spear
John - Died of natural causes.
Tough crowd. Maybe that's why John is portrayed as a "little less than manly" looking in the Last Supper painting. How would you look if you were in the painting?