Jonathan Shay, whose book Achilles in Vietnam proposes readings of the Iliad that have been helpful and therapeutically useful for the healing of mental wounds in Vietnam veterans, pointed out that their familial relationship in the Iliad must not be overlooked: Patroclus is Achilles' cousin and his foster brother; symbolically, comrades in battle are "like brothers," making the Achilles/Patroclus model useful for thinking about the intensity of Vietnam veterans' feelings of loss when their comrades fell beside them. Shay places a strong emphasis on the relationships that soldiers who experience combat together forge, and points out that this kind of loss has in fact often led to "berserking" of soldiers stunned with grief and rage, in a way similar to the raging of Achilles in the Iliad. Shay points out that a frequent topos in veterans' grief for a companion is that companion's gentleness or innocence; similarly, while a warrior of great note, Patroclus is said in the Iliad by other soldiers and by Briseis the captive to have been gentle and kind.
