Definition: Rewrite each original sentence in order to make it easier to understand by non-native speakers of English. You can do so by replacing complex words with simpler synonyms (i.e. paraphrasing), deleting unimportant information (i.e. compression), and/or splitting a long complex sentence into several simpler ones. The final simplified sentences need to be grammatical, fluent, and retain the main ideas of their original counterparts without altering their meanings.
Input: They had however been reinforced by a detachment of 32 grenadiers from one of the Swiss mercenary regiments summoned to Paris by the King shortly before 14 July.

They had been strengthened by 32 grenadiers, who were brought to Paris by the King before 14 July.