What was all the symbolism in the book the illiad and what are some of the themes?

Symbolism: Zeus' Eagle / The Shield of Achiles

Explanation:

Zeus's Eagle indicated that Zeus was on the soldier's side.

The Shield of Achiles symbolizes the connection between the humanity, life in general and warfare.

Answer:

Themes: Free Will; The gods; Honor; Love; War; Mortality, etc.

Explanation:

Some themes presented in Homer's The Iliad are:

Love: parental love

The Gods: their intervention in the life of the humans.

Honor: soldiers were honored after the battles.