This is the 744th most frequent Italian word.
pronti
"Pronti" means "ready" (plural form) in English.
Here, 'pronti' is used as an adjective describing readiness, matching the plural subject.
Siamo pronti a iniziare il viaggio.
We are ready to start the journey.
Here, 'pronti' is an adjective agreeing with the masculine plural noun 'soldati'.
I soldati erano pronti per la battaglia.
The soldiers were ready for the battle.
Here, 'pronti' is used interjectively to indicate preparation before starting.