Just recently I downloaded a mobile strategy game about the Napoleonic wars. In the game, you can use grenadier units, and they are portrayed as throwing bombs at cities in the game animations, encouraging you to use grenadier units to siege cities and fortresses with their bombs. Are there any accords to reality? How did Grenadiers actually use their bombs? Because it seems pretty ineffective to siege cities with only grenadiers throwing tiny bombs.
We've had a bunch of questions and answers about grenadiers, see
"Did Grenadiers ever blow themselves up?"
where I went into some depth on the history of grenadiers, when they used grenades and when and why they stopped-- by the time of the Napoleonic Wars, they're rarely if ever mentioned in use. One of the curiosities of the grenade is that after more than a century where its considered obsolete, it returns to military utility in the Russo-Japanese War.
More can always be said about a subject, but take a look at that answer and see if that answers your question.