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 were helped by a 32 grenadiers from one of the Swiss mercenary regiments, who were called to Paris by the King right before 14 July.