Perhaps the most important lines in 4.4.1-30 are lines 25-30. Hamlet has learned that Fortinbras is moving against Poland. The Poles are fighting for their homeland til the bitter end.
Hamlet remarks in wonder:
Two thousand souls and twenty thousand ducats
Will not debate the question of this straw:
This is the imposthume of much wealth and peace,
That inward breaks, and shows no cause without
Why the man dies. I humbly thank you, sir.
Hamlet cannot believe that such a sparsely populated and relatively worthless piece of land inspires such dedication. This news will lead him to the soliloquy that concludes this scene. Here, Hamlet is forced to examine his own bravery and commitment to the avenging of his father despite the outcome.